Don't want my kid to grow up in a broken home

I got pregnant at 15 by my husband. He was 16. When I turned 16 our parents married us. They didn't want the baby born out of wedlock because both our parents are Catholic. They made it seem like it was something we had to do and we inherited a house from his dead grandmother. He's 28 I'm 27 and for years I kind of feel like we are roommates. We don't seem to really want the same things in life. I don't know if I still love him. Sure I thought I did when I was 15 but we were together 4 months when he got me pregnant. We had been together for 10 months when we got married. I don't know. He recently got drunk and talks about he wishes he got to explore himself before settling down. He had told me a month ago he thinks he's bisexual and when he was drunk he was saying he's sad he never got to explore that. We kind of just stay together for our child.... We've tried marriage counseling but it didn't really do much for us. I kind of wonder if we would be happier living seperate lives but I feel like it's selfish to take our kid out of a two parent home