I think the issue with Kyle and Lisa is more than it seems. Adrienne's accusations against Lisa were bad and Kyle didn't defend Lisa, but Kyle did more than that. Season one showed that whenever Kyle was with anyone and they spoke badly about Lisa, Kyle agreed. Like the comment about playing chess. And Lisa being manipulative. Kyle did more than not defend...she agreed and stood by while people spoke ill of her when she wasn't there. That, in my opinion, is the problem.