Oliver Wood - yeah, definitely wouldn't be BFF's. lol. It's the whole Gryffindor thing ... not to mention opposing Quidditch teams and what not. I doubt he'd be overly hostile in public, but he'd definitely have a few snide comments for Ollie.
Terence Higgs - He's a Slytherin and he plays quidditch. He's definitely alright in Ade's book. Ade is pretty stubborn about asking other people for advice, but I'm sure in drunken moments he's hunts down Terence for a chat.
Chris Flint - Ade tends to be a little more discreet about his liaisons ... or rather tries to be, but past interactions between the two were probably a sure thing. He likes distractions, particularly ones who don't want anything from him other than that. Definitely friends.