I didn't like the way Ren was behaving at all - he was being jealous, controlling and possessive, not things I like in a guy. I don't like the way he is being.
I guess over this Heel arc I have come to like Shou more, just because Ren is being too aggressive and he has a lot of anger under that cool exterior and now he can't even hide it any more. I think that Ren will work all that out and ultimately she will wind up with Ren but I don't think it will be for a while. I like Ren - just not right now.
I think Kyouko was more like just throwing him off of her than meaning to be seductive, she didn't even think he was himself, she was like who is this in Ren's body?