both men bad choices (spoilers)
I thought she should ditch both these men. Evan looked so weak, and it was bad form to come there and try to break up her wedding. Jeffrey thought mostly of himself. Kim could have gone to Columbia instead of Stanford--it's just as good--if only they had come to an agreement about it ahead of time, but it didn't seem like they discussed things much.
She definitely should not have married Evan again.