Form I-129F, Petition for Alien Fiancé(e): what it is and where relationship evidence fits

Form I-129F is the USCIS petition a U.S. citizen files to bring a foreign fiancé(e) to the United States on a K-1 visa, or a foreign spouse on a K-3 visa. This guide summarises what the official instructions ask for and where chat history can support the two K-1 requirements: mutual intent to marry and an in-person meeting.

Last reviewed: 2026-10-14

At a glance

Form: I-129F, Petition for Alien Fiancé(e)
Agency: U.S. Citizenship and Immigration Services (USCIS)
Edition: 01/20/25 (checked 2026-10-14) — USCIS asks you to make sure every form in your package is the current acceptable edition before you send it.
Filing fee: USCIS publishes the current I-129F filing fee in its fee schedule (Form G-1055). We do not print the amount here because USCIS fees change; check the schedule on the day you file. Official fee schedule.

What the form is for

Classify a foreign fiancé(e) as a K-1 nonimmigrant so they can enter the United States to marry you and then apply to adjust status to lawful permanent resident.
Classify a foreign spouse as a K-3 nonimmigrant so they can enter the United States to wait for an immigrant visa and pursue adjustment of status.
Unmarried children under 21 of a K-1 or K-3 beneficiary can apply as K-2 or K-4 nonimmigrants without a separate petition; the form asks for information about each of the beneficiary’s children.

Who can file it

Only a U.S. citizen can file Form I-129F. A lawful permanent resident cannot petition for a fiancé(e) on this form.
K-1 (fiancé(e)): you and your fiancé(e) must both be legally free to marry and intend to marry within 90 days of your fiancé(e)’s admission to the United States.
K-1 (fiancé(e)): you must have met in person within the two years immediately before filing, unless you show either that meeting would violate strict and long-established customs of your fiancé(e)’s foreign culture or social practice and that all aspects of the traditional arrangements have been or will be met in accordance with that custom or practice, or that meeting would result in extreme hardship to you.
K-3 (spouse): you have filed, or are filing, Form I-130 for your spouse and want your spouse to enter as a nonimmigrant while waiting for the immigrant visa.

How and where it is filed

Paper filing by mail: the USCIS I-129F page lists a lockbox mailing address (the Dallas lockbox when we checked). Copy the address from that page on the day you mail your package.
Online filing: Form I-129F was not on the USCIS list of forms available to file online when we checked.
USCIS cannot adjudicate Form I-129F at its international offices.
Sign the petition: USCIS rejects unsigned petitions, and a stamped or typewritten name is not accepted in place of a signature.
USCIS may ask you to attend a biometrics appointment or an interview.

Evidence the instructions ask for

Evidence of your U.S. citizenship, for example a copy of your U.S. birth certificate, Certificate of Naturalization, Certificate of Citizenship, Form FS-240, or a valid unexpired U.S. passport issued with a validity period of at least five years.
Evidence that any previous marriage of either of you was legally terminated (divorce decree, annulment, or death certificate).
One color passport-style photo of you and one of your beneficiary, taken within 30 days of filing.
Legal name-change documents if either of you uses a name different from the one on your evidence.
K-1: evidence that you both intend to marry within 90 days of your fiancé(e)’s entry, such as statements of intent to marry signed by both of you.
K-1: evidence that you met in person during the two years immediately before filing, such as a written statement describing the meeting, airline tickets, or passport pages.
K-3: evidence that you filed Form I-130 for your spouse, and your marriage certificate.
A full English translation of every foreign-language document, with the translator’s certification that it is complete and accurate and that they are competent to translate, plus their signature, printed name, date, and contact information.

Where relationship evidence fits

The I-129F instructions do not list a general “proof of relationship” item. For a K-1 petition, the relationship evidence they ask for is tied to two requirements: your mutual intent to marry within 90 days, and an in-person meeting within the two years before filing.
Intent to marry: the instructions accept statements of intent signed by both of you or any other evidence that establishes your mutual intention by a preponderance of the evidence.
In-person meeting: the instructions ask you to describe the circumstances of the meeting on the form and to attach evidence that you were in each other’s physical presence during the two-year period.
Exemption requests: if you ask to be excused from the meeting requirement, you must explain why and include supporting evidence. The instructions give examples such as medical records, statements from religious leaders, or evidence of immediate danger. If you rely on customs, you must also include evidence that all aspects of the traditional arrangements have been or will be met in accordance with that custom or practice.
USCIS may request more information or evidence after you file, and may ask for the originals of copies you submitted.

What chat history can help show

The in-person meeting: dated messages arranging flights, arrival times and where you stayed can corroborate your airline tickets and passport pages. They support those documents; they do not replace them.
Mutual intent to marry: conversations about the proposal, the engagement and wedding plans can be part of the “other evidence” of intent that the instructions allow, alongside the statements you both sign.
The timeline in your written statement: messages dated around the meeting you describe help the officer confirm that it falls inside the two-year window.

Before you include chat history

Chat history is not a named requirement for Form I-129F. Treat it as supporting evidence and lead with the documents the instructions name.
Send paper copies. USCIS says not to include non-paper items such as CDs, DVDs or thumb drives in the filing package (photographs or copies of such items are accepted).
Leave out intimate content. USCIS says not to include graphic photos of childbirth or intimate relations as evidence of a relationship.
Messages in another language need a full English translation with the translator’s certification.

Common mistakes

Mailing an outdated edition of the form instead of the edition shown on the USCIS I-129F page.
Forgetting to sign. USCIS rejects unsigned petitions.
Meeting evidence that does not show you were physically together, or a meeting that falls outside the two years immediately before the filing date.
Sending chat exports, photos or videos on a USB stick, CD or DVD instead of on paper.
Including intimate or graphic images as relationship evidence.
Foreign-language messages or documents without a complete, certified English translation.
Sending original documents that were not requested. USCIS may destroy originals it did not ask for.
Skipping the International Marriage Broker questions, or not requesting a multiple-filer waiver when the IMBRA limits apply (for example, if you previously filed I-129F petitions for two or more fiancé(e)s).
Leaving out criminal-history information the petition asks for. If the petition is approved, USCIS gives that information to the Department of State for disclosure to your beneficiary.

Frequently asked questions

Can a green card holder file Form I-129F?

No. The I-129F instructions limit the petition to U.S. citizens, so a lawful permanent resident cannot petition for a fiancé(e) on this form.

Do WhatsApp or other chat messages count as evidence for Form I-129F?

Chat messages are not a named requirement, but they can support the two K-1 requirements. The instructions accept any other evidence that shows your mutual intent to marry, and for the in-person meeting they list examples such as a written statement, airline tickets and passport pages or other evidence. Submit messages as printed pages (not on a USB stick or disc), leave out intimate content, and translate anything that is not in English.

What if we have not met in person in the last two years?

You can ask USCIS to excuse you from the requirement if meeting in person would result in extreme hardship to you, or would violate strict and long-established customs of your fiancé(e)’s foreign culture or social practice. For the customs ground you must also show that all aspects of the traditional arrangements have been or will be met in accordance with that custom or practice. Explain the reasons on the petition and include supporting evidence; the instructions mention examples such as medical records, statements from religious leaders, or evidence of immediate danger.

What happens after USCIS approves the I-129F?

USCIS sends the approved petition to the Department of State’s National Visa Center, which forwards it to the U.S. embassy or consulate where your fiancé(e) applies for the K-1 visa. USCIS says a K-1 visa, if granted, is valid for up to 6 months for a single entry. After admission you have 90 days to marry, and K-1 status cannot be extended. After the marriage, your spouse can apply for a green card with Form I-485.

Can I file Form I-129F online?

When we checked on 14 October 2026, Form I-129F was not on the USCIS list of forms available to file online. The USCIS I-129F page gives a lockbox mailing address; use the address shown there on the day you file.

How much is the I-129F filing fee?

USCIS publishes the current fee in its fee schedule (Form G-1055). We do not print the amount because USCIS fees change; check the schedule before you mail your petition.

Can I use Form I-129F for my spouse instead of a fiancé(e)?

Yes, as a K-3 petition, but only if you have filed or are filing Form I-130 for your spouse. Include evidence that you filed the I-130 and your marriage certificate.

Do my fiancé(e)’s children need their own petition?

No. Unmarried children under 21 of a K-1 beneficiary can apply as K-2 nonimmigrants without a separate petition. Form I-129F asks for information about each of your beneficiary’s children.

Related guides and templates

Official sources

USCIS — I-129F, Petition for Alien Fiancé(e) (checked 2026-10-14)
USCIS — Instructions for Petition for Alien Fiancé(e), Form I-129F (edition 01/20/25) (checked 2026-10-14)
USCIS — Visas for Fiancé(e)s of U.S. Citizens (checked 2026-10-14)
USCIS — G-1055, Fee Schedule (checked 2026-10-14)
USCIS — Forms Available to File Online (checked 2026-10-14)

Not legal advice. PartnerProof turns WhatsApp, Telegram, Instagram, Facebook Messenger, and iMessage exports into dated, chronological PDF evidence you can print and add to your package. It does not fill in or file USCIS forms. Try it free →