Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
their boyfriend
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "their boyfriend" is correct and usable in written English.
It can be used to refer to a boyfriend belonging to a group of people, typically in a context where the gender of the boyfriend is not specified or when referring to multiple individuals. Example: "All of the girls in the group were excited to introduce their boyfriend at the party."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(4)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
52 human-written examples
Their boyfriend broke up with them.
News & Media
"They want to know: Does their boyfriend love them?
News & Media
Everyone slaps their boyfriend once, when they deserve it".
News & Media
He also began referring to himself as their boyfriend.
News & Media
Yesterday someone bought "I love you" for their boyfriend.
News & Media
They were much less likely to have confronted their boyfriend when they discovered he had other girlfriends.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
8 human-written examples
When one goes in prison, another one comes to become their 'boyfriend'boyfriend
News & Media
Teenagers wanting to save a treasured text from their boyfriend/girlfriend? Maybe, but their phone is now capable of a lot of storage.
News & Media
A steady sexual relationship was reported by 58% of the cohort, but a part of the cohort had also had sex with other men besides their boyfriend/husband.
They start to develop intimate relationships, which bring new complex issues, such as disclosure of their HIV status to their boyfriend/ girlfriend, fear of stigmatisation and discrimination, and risk of transmission of HIV infection (Thorne et al., 2002).
Did you feel your friend chose their boyfriend/girlfriend over you?
Wiki
Expert writing Tips
Best practice
Use "their boyfriend" when referring to a boyfriend shared or associated with a group of people, especially when gender neutrality is desired or the specific individuals are not named.
Common error
Avoid using "their boyfriend" when referring to a single individual's boyfriend; in such cases, use "her boyfriend" or "his boyfriend" as appropriate.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "their boyfriend" functions as a noun phrase, where "their" acts as a possessive pronoun modifying the noun "boyfriend". It identifies a male romantic partner associated with a group of people. As confirmed by Ludwig, this usage is grammatically correct and common.
Frequent in
News & Media
52%
Science
28%
Wiki
12%
Less common in
Formal & Business
2%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "their boyfriend" is a grammatically sound and relatively common way to refer to the boyfriend of a group of individuals. Ludwig AI confirms its grammatical correctness. It's crucial to use it when 'their' genuinely refers to a plural subject to avoid grammatical errors. Alternatives such as "their male partner" or "their significant other" offer varying degrees of formality and gender neutrality. The phrase appears frequently in News & Media and Science domains, indicating its broad acceptability. The most common mistake is its usage when only referring to a single person's partner; in these cases, "her boyfriend" or "his boyfriend" is the correct choice.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
the boyfriend of theirs
Changes the word order while maintaining the same meaning.
their male partner
Replaces "boyfriend" with a more neutral term, suitable for formal contexts.
their man
A more informal and colloquial substitute for "their boyfriend".
the guy they're dating
An informal way of referring to their boyfriend.
their significant other
A gender-neutral term that can be used when the gender of the partner is unknown or irrelevant.
their lover
A more intimate and potentially romantic alternative.
the person they're seeing
A general term for someone they are romantically involved with.
their fiancé
Specifies a more committed relationship status.
their spouse
Indicates a marital relationship.
their male companion
A more formal and distant way to refer to their boyfriend.
FAQs
How do I use "their boyfriend" in a sentence?
Use "their boyfriend" when referring to the boyfriend of a group of people, like in the sentence, "All the sisters introduced "their boyfriend" at the family reunion."
What's a gender-neutral alternative to "their boyfriend"?
A gender-neutral alternative is "their partner" or "their significant other", which works regardless of the partner's gender.
When should I use "her boyfriend" instead of "their boyfriend"?
Use "her boyfriend" when referring to the boyfriend of a single female. For example, "She introduced "her boyfriend" to her parents."
Is it grammatically correct to use "their boyfriend"?
Yes, it is grammatically correct when "their" refers to a group of people. For example, "The team members and "their boyfriend" planned a surprise party."
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested