I’m thinking about leaving my husband

My husband has been super disrespectful towards me the past few months. Just from small to big things. Telling me he wants to get a reaction out of me by looking at other woman, not opening the doors for me but opening the doors for other girls in front of me. Etc. But a little bit ago I found out his “just friend” was actually his ex. She calls him at random times and stills tries to message him random things like “this reminds me of you stupid” or asking him to buy her stuff , sending snaps etc. He had been lying about her for months. After I caught him he told me he helped her buy a house after they broke up and she just owes him money, and that apparently she was under his phone bill and paying him each month for that because it was “easier for her” keep in mind they haven’t been together for 3 years. I told him he needs to block her from everything except one way so he could get his money back. He got defensive at first but then removed her from Snapchat, he told me he wanted to tell her he was going to remove her because he didn’t want to hurt her. He defended her about calling late at night too saying it was a cultural thing. He told me he removed her off fb but actually didn’t as well. I told him that the next time she calls he needs to tell her that he is just trying to get his money back and that will be the end. But then she called like 2 months later, and you know what he said “my wife’s with me” and she immediately hung up. He told me he didn’t feel comfortable talking to her in front of me. My gut just felt sick. He’s mad at me though for not being okay with it. My typing might not make sense I just feel so emotional and don’t know what to do