system
A chat on subreddit /r/NoStupidQuestions
human
But sometimes, even when trying to get her off first, the guy comes first. So if you care about the person, who just gave you an orgasm, you aren't going to finger her and make out? I get if it hits, and you pass out, but not disinterest. That's fucked up
gpt
Respectfully I don't think you believe what I'm saying about the mind shift.  Which honestly is interesting because it's very different.

But it's an active repulsion from sex.  I wouldn't ask my partner to force themselves to have sex with me when they felt nauseated, motion sick, ill, etc.  No good person would.   So why would forcing through when you're repelled from sex be different?

Forcing somebody to have sex when they don't want to is wrong, and it's that want which dissolves.  Beyond that it's an active disinterest, to being repelled by sex.  And it's not a choice, it's chemistry. 

Trust me it's jarring how abruptly it happens.  And really hard to convey how deeply it shifts where your mind is. 

Which is why getting them off first is important and foreplay is key.  For both that leads to the most enjoyable sex.