Good friends

[Ra****]

Listen I'm at my friends place now I think there up to a 3some with me. I'd definitely fuck her she's got a great ass and tits, she's so mysterious, I'd probably do it, but I'm nervous a little bit. My friend he's a big ol dude '6 5" 280, I'm '5 8" 160 how should I act around them? Should I let them catch me staring at her big ass, or just wait n see if that's there intentions???