I'm with Msterbeau, he's nothing but a smooth asshole, and if that.
Kick him in the head for being greedy, you can do better.
The slut thing isn't in question I don't beleive, but I agree with most everyone on this thread. He's just trying to satisfy is spur of the moment urge for a new girl (hence him wanting you and your friend) it seems he went out of his way to contact you and not your friend because you're the more aggressive one and he probably thought you'd be easier to be honest...
Toss that loser where he belongs, and warn his 'girl' if you can, he's a douchebag that will cheat on his significant other with anything (a slut, his sister, dogs, cats, turtles, etc.)