Re: the girl
She's already cheating by meeting you without her boyfriends knowledge.
Or, if you were the boyfriend, would you not categorize it as cheating if your girlfriend was going to an ex FWB's house to play wrestle.
Re: morality
I can only speak for myself here, but I will not actively pursue a girl I know is taken, because that just fucks with my principles.
If however the girl hides the fact that she has a boyfriend or otherwise basically throws herself at me without any active pursuing needed from my end: fair game.
She's already cheating by meeting you without her boyfriends knowledge.
Or, if you were the boyfriend, would you not categorize it as cheating if your girlfriend was going to an ex FWB's house to play wrestle.
Re: morality
I can only speak for myself here, but I will not actively pursue a girl I know is taken, because that just fucks with my principles.
If however the girl hides the fact that she has a boyfriend or otherwise basically throws herself at me without any active pursuing needed from my end: fair game.