Probably, WOW, what did she eat?
Look there are entire schools of thought dedicated to women farting and burping around their boyfriends and whether or not it is unattractive and offputting. I'd wager that most guys, while not exactly yearning for you to do so, don't care as much as women care. We fart and burp. It's going to happen. We fire of silent bombs all the time then look at you to see if you're going to acknowledge that it smells rank. Because WE know it smells badly. I guess it's like the military's dont ask, don't tell policy. If nobody acknowledges the fart, does it exist?
I think it does.
Anyway, I remember an ex of mine from years ago. She was laying on my bed and let off the single nastiest smelling butthorn (pronounced 'beyu-torn') that I'd ever smelled. Of course, she was embarassed but I couldn't care that she farted, I needed air. In fact, it might have been one of her more human moments. You can't just go around holding that in, you might explode. Which I think is a pun. Either way, I didn't care nor did I judge her. Of course I joked with her about it, but that's because she forced the evacuation of that room, which is kind of impessive if you think about it.
Look, guys know you all fart so the first time you do it, we're a little surprised that you bucked social convention but it too passes. Pun. Either way, we get over it.
As soon as the smell passes.
If you live in a small apartment and your farts really stink and linger for like five minutes and there's nowhere for the guy to run and get some fresh air, you might not wanna be around your guy when you let it rip.
Did you know that that is what a bathroom fan is for?