I know what to do, so why can't I do it?

So I'm with this guy 10 months now and I'm 🤰 with his child. We fight ever so often, but it's like we can't let go of each other. When we argue we curse, hang up the phone, slam doors, etc and then hours later he calls and we discuss the argument in a cleaner tone. The worst part is we ALWAYS end up having sex after. EVERY time. I try my best to please this man in everyway possible. I honestly feel like a "yes man" or woman in my case. I'm 23 going 24. I need some harsh truth.

Please don't be rude.