guy drama

So here's the story. I dated my ex for 3 years but we've know each other for 12. We were engaged but ended up breaking because he didn't want a commitment and couldn't stay faithful. (He proposed to me in April '15 and we broke up in June '15). I was devastated because I really loved this guy and I just wanted him to feel the same about me. I wanted to be enough for him. So after a few months I went on some dating apps and met a new guy. We went on some dates and ended up hooking up after a few weeks and I'm now pregnant with his daughter, 21 weeks. This guy treats me like a queen but honestly I don't really have strong feelings for him. I don't love him and I'm definitely not in love with him and I feel horrible about it because at the end of the day I'm not 100% over my ex. But I know that me and my ex don't work as a couple because he can't commit. We still talk to this day and he just wants to find girls to hookup with and that's it. And just hearing him talk about or show me all of the girls he wants to have sex with and how attractive he thinks they are breaks my heart but I don't say anything. I've even offered to be his wingman a few times just so that I don't seem jealous and crazy since we haven't been together for a year now. He thinks I'm completely over him which is why we still hang out but I'm really not but there's nothing I can do since I'm having another guys baby which, for the record I don't regret getting pregnant at all, I love my baby with all of my heart. Idk I just wish somehow things were different 😐