What is Sam’s problem??

On every rewatch, this scene makes me so irrationally angry like Sam is pick me on a whole new level. Girls who laugh whenever guys are being douchey to other girls deserve a special place in hell. I understand when Sam said later that she was on the defense bc Deena is allying with Snooki and Jenni but at this point, Deena has already been nice to Sam twice where she kindly introduced herself to her and she’s tried to get to know her by asking her where she’s from to which Sam was very short in her response so idgi?? Wouldn’t all of that cause Sam to realize that she doesn’t have be on the defense mode with this new girl?? She’s lucky that Deena even gave her a chance and was trying to be open minded cause most girls wouldn’t even do that had they known that two of their friends don’t like this girl. I know she’s with Ron atp and the insecurities one must feel while being with that one, but even on my lowest self esteem days I know better than to be nasty to someone who’s never done anything to me