I originally posted this as a reply to a guy but it got quite a few responses so I thought I'd put it here and see what other people thought:

Can I get some advice? What do you think of this:

I'm in a situation where I've met this girl who is down to fuck. I've met her boyfriend once and he's beta as fuck, she was all over me with him in the room literally grinding on me and shit. I didn't pursue because it's likely I'll be meeting him quite often soon as he's starting to join my social circle but this girl has made it clear she wants to fuck the next time we meet sometime this week. She's good looking and I know from hers and her boyfriends perspective I'm alpha as fuck* but again he may become a member of my social circle and having male friends you can trust is so valuable. Especially if I don't fuck her he'll appreciate me more...

*edit: I'm not claiming to be a master on trp, if I was I wouldn't be here. What I mean is every time I've met the girl I've maintained frame very well and from hers and her boyfriends PERSPECTIVE, I'm alpha as fuck.