Daddy drama??

What did it take for your significant others to realize that babies aren't a game lol. I'm 24 weeks, already a stay at home mom, and my Boyfriend still thinks it's ok on weekends when my first born isn't home, to go out until 5 am then come home drunk! And on top of that I'm home all night worrying and stressing out, losing sleep over where he is and if he's safe. I know the baby isn't born yet, so do I just have to ride it out until the baby comes? And then at that time hope he changes his ways? I'm so lost and hurt and I'm getting worried