Tired of bs

Me and my wife have been married for 3years together for 4, our first year was horrible she wanted a divorce and cheated multiple times. One was with her ex and he still won’t leave her alone I saw yesterday that he sent her friend request and she never says anything about all the guys messaging her she never replies but I think it’s still wrong. We don’t fight like we use to but she started back saying she is going to leave me. The sad thing is I’ve heard it so much now I don’t really care anymore, although I love this woman with my whole heart and would do anything for her, but I’m just so stressed taking care of her and not being able to be me and having to do everything she wants to but fuck what I want! I just hate everything being my fault and tired of her rude mean attitude I just wish she would change I’ve changed so much for her! And she still wants kids why would I put any child through this bull shit? What can I do? (Not having kids any time soon hopefully)