BF issues

I'm literally no longer happy with my child's father. Our baby isn't even here yet. I'm due in June. But he doesn't do anything for me or our child, let alone himself. He's been jobless and having me support him for months. I pay all the bills at my apartment and have my own car, which he has practically ruined. Now I'm left to pick up the pieces. I feel like I'm always nagging him lately to get a job and do better but all he does is smoke weed, play video games and hang with his friends. We don't even like to be around each other anymore. He doesn't like it because I nag I don't like it because he is lazy and unwilling to do anything for himself or us. I haven't been happy for months and I'm starting to think I'm ready to end our relationship. I'd much rather be on my own then stressed and unhappy in a relationship. I hope he gets it together for my child's sake, & maybe we could be together in the future if he proves himself but I'm literally emotionally and physically tired. What would you do in my situation? Give up on the relationship? Or stay with him and keep nagging and hoping?