[Rivière]

I think splitting with him would be for the best. He's messing with your emotions. He definitely seems like he wants his cake and eat it. It's as if as soon as he feels he's losing his grasp on you, he changes his tune and says he'd prefer to be with you. If true, that's very manipulative and unfair to you. He's making you feel all kinds of things just so he can get what he wants from you.

I also have to ask, if he's in an open relationship with this girl, how is it that she can 'cheat' on him? Is there some specific rule somewhere I missed? He seems all for telling you all the bad things about his girlfriend, but I have to wonder, what exactly is he telling her about you? It comes across like he's pitting both of you against one another because he likes that you both fight over him and it makes him feel good. Which if also true, is extremely manipulative. You can do better than him.