[DrPhil]

I always used "significant other" or "partner." Here's why:

1) I think post-college people are too old and too accomplished (or on their way) to have boyfriends and girlfriends. Or, at least to use that terminology in professional settings. It's about as silly as saying "my man" around people who aren't family, friends, or personal acquaintances.

2) Using "boyfriend" and "girlfriend" is very gendered when it tends to be unnecessary.

3) Using "boyfriend" and "girlfriend" is very sexual orientationed when it tends to be unnecessary.

Depending on the context and what you are saying, some people will wonder the gender of the "significant other" (or "life partner") and whether you are married. But, unless they are being nosey as hell, those details tend not to matter for a simple comment like "I have to consider where my significant other can do his residency." Using "his" would calm the gender and sexual orientation curiosities of some people. It still doesn't divulge the actual status of the relationship except that he's significant enough to be your significant other.