Is he manipulating me?

My husband kissed another woman and had an emotional affair for a yr. it’s over now accord to him and he says he loves me and wants me. He still keeps in contact with her thou and he doesn’t lie about. He keeps reassuring me there is nothing between them. He says she isn’t the problem and never was and that I was thenproblem in our marriage that’s why he stepped out. I do agree that our marriage had issues before she came along but my husband turned into a monster when he met this woman. He couldn’t stand even me just breathing. It’s like he was madly in love with her. I finally moved out of our home and completely left he alone. He started wanting me back right away saying he felt bad for hurting me and it made him give up on us and focused on her. I was so miserable living with him, I just lay in bed all day and he was resenting me even more. Anyway I told him moving forward I can’t have him talking to her and he keeps saying there is literally nothing between them and that his heart is secure with me. He says I need to leave her alone and focus on building us again. He says I need to fix myself instead of worrying about her. I am starting to question maybe he is right. If his heart is secure with me it should matter if he talks to her or not ?! Or is he manipulating me: I’m starting to feel maybe I’m crazy idk