Having sex with the intention of breaking up afterwards
Hey Jen how was the break up sex?
Break up sex is when a couple, which as already agreed to break up, has one last go around.
John: My girlfriend dumped me last night.
Bob: Did you at least have break up sex?
Bob: Man, that's your right!
The bittersweet, passionnate, lusty sex you have with your partner shortly after, whilst, or shortly before breaking up with them. Usually both parties are aware that they're breaking up.
It's too bad she left me, but man, was that some good breakup sex.
sex a couple has right before they break up.
Joe: I'm sorry about the break up man. Did you guys at least have a break up sex?
Alex: Nah. I really wanted to, but I don't think she was up for it.