If Lawson is not that into Cat what the hell is he doing? Why put his girlfriend through so much grief for a meaningless fling?
The general vibe that I get from most commentators is that Cat is mostly to blame. I don't buy that. Cat owes nothing to Candice. For all Cat knows the relationship was on its last legs anyway.
If anyone deserves most of the flak and the blame it is Lawson. He is the one who is supposed to think of Candice, the one who supposedly cares about Candice. And if Lawson is not even that into Cat, if he has an ounce of decency he would exercise a modicum of self-control. Lots of people who are in relationships will come across someone from the opposite sex who will try to hit on them, but all you have to do is say, no thanks I am not interested.