WHY did He act like this all of a Sudden??

[jodydavis73]

okay, this guy & i slept together (on several occassions). Now he told me not to get attached. So I haven't. I like him & have feelings for him but, I'm respecting his wishes (in fact, I now have a b/f). Now, I've asked him (& his current g/f) to come over and hang out because she is one of my friends (which i don't have a problem with) and when I'm home alone, he will come over with his g/f, when my b/f is there, he makes up excuses on why he can't come over. He makes jokes about my b/f sometimes and says things about he can do a lot of stuff that my current b/f can't. But, he still wants to come over and see me. Why is he acting like this?? Is he jealous??