<human>: Can you provide a brief rundown of the text in within 3 sentences?

One of my friends wants to cheat on his girlfriend with me 

I knew him before she met him and we were exchanging dirty pics before she met him. 

If we do it and she doesn't find out its alright, right? She'll never find out I'll make sure of it. I care about her feelings and she won't be hurt if he doesn't find out. I'm moving away from this city this summer for good, she'll never see me or find out. 

Also he likes to vent to me whenever he's pissed off at her and says he just wants the companionship and will get rid of her once she gets too annoying.
<bot>: I don't get many opportunities for sex and I really want to fuck my friend but I don't want to hurt his girlfriends feelings