Probably fueled by impulse and alcohol and Kara's innate need to see if she could push Sam away by showing him what a rotten human being she is.

Yeah, I could buy that.

I don't for one second think that he loves Kara Thrace. I think he loves who he *thinks* Kara Thrace is.

I completely disagree with this, but that shouldn't surprise you. *g*

Why he's pissed is that Lee insists on pretending there's nothing going on -- which frankly is an insult to Ander's (and Dee's) intelligence.

True. At the same time, I think that's the natural reaction. All four of them could really be handling this better -- but if they were, it wouldn't be nearly as much fun to watch. ;)