I believe Cate and Tyler stay together for all the wrong reasons. First , they are both used to each other. Second , Tyler , can boss Cate around ; which deep down he loves. If Cate had a backbone , or fixed herself up into the position where she could tell him where to go , he would have been old news by now. And Cate is clingy and does not want to be alone , so she has Tyler for that. Tyler IMHO is also a fame whore , and being with Cate provides him with an outlet for that. The cameras and etc. People always saying what a great boyfriend and father he is. Just IMO , I wouldn't be surprised if Tyler loves when the women comment him via social media on these things and he contacts them back and etc. He loves the attention he is getting. Very creepy. If this is how he treats her on camera , I shutter to think of him without it rolling.