I haven't reached this point of the story yet but I couldn't resist the spoilers.
I'm already dreading this betrayal. My warrior is female (as am I), light side, and has a good romance going. While my character is rather forgiving, betrayal is one that she just can't forgive.
I have no idea how she'd be able to rationalize not killing him or at least kicking him off her ship, she's going to be a mighty pissed off lover.
I hope we get the option to get rid of him. Especially if the romance just continues on as normal afterwards :S