Maybe He is a Player????

I have been wondering this for some time now. I have seen him get into "animated" discussions with other females...Now, I know this doesn't ALWAYS mean something, but I realize often it does...ie: he frequently (or used to anyways), get into animated, enjoyable conversations with me...

So lets just say, for the sake of argument, that there was some kind of...er...messing around of some sort....and then lets say right after that happened said person starts spending less time with you...

What does it mean when he talks to you a little, but not as much as before? Is this a guys way of being polite? And what does it mean if there is a small amount of flirthing but not nearly as much as before? Is this a power trip thing-- like hard to get? Or is this the nice way of letting someone down?...

Then there is the "other other woman" factor. Maybe there are multiple other woman in his life or something. This is really fucking with my head. I guess I shouldn't be surprised. For instance, tonight he was chatting with this other chic for at least a half an hour...maybe longer...then I overheard her say something about emailing him. I asked another friend what he was up to, and the other frined said, "oh, he's just being flirtatious"--ie: admitting that they dude was in fact being flirtatious...that made me feel so much better really...My life is so fucked right now. I am quite confused....