Was my marriage a mistake?

I've been married to my husband for 2 years and I'm wondering if it was a mistake. There were always signs there that I ignored because I wanted a family.

We got pregnant with our first child before we were married and he was still living with his parents. He moved out and in with me, he grew up and helped with all bills and responsibilities. I wanted more and kept bringing up marriage so he did eventually propose. Looking back on it now I'm not sure it's what he really wanted and he might have just done because he thought he should because of our child. When we got married I picked the date and I made all the arrangements. He didn't help with any of it. I found out a week before our wedding that he was talking to other women and lying about it. He was also seeing them but lying and not telling me about it. He swore up and down that they're just friends and I chose to believe him. Now two years later I'm finding out that he's lying about talking to and seeing women again. He again swears there is nothing inappropriate and they're just friends. I feel like he's lying and all the signs were there I just ignored it. We are planning on moving next month to a different state where he doesn't know anyone so I'm hoping things will change. I'm not sure I should give him this last chance but I don't want to break up our family. I'm just feeling heartbroken and needed to vent.