Saving money while having a baby

My bf and I are having a baby in September. He has yet to save any money and I will tell you, we will need it when the baby comes. I pay everything that includes owning a home... mortgage(he does pay me $300 towards rent, my house payment is $1000/month), electric, garbage, mowing the lawn, groceries and I pay for everything for my son from a previous relationship ... he just pays his bills because he has a lot of toys. I always let him go out and do what he wants, meaning going to the bar all night. I finally put my foot down when he said he was going out tonight. He got so mad, went downstairs and won’t talk to me. I’m struggling to save money because I have so many bills, no toys, no nothing. Everything I have is necessary. He has a nice truck, boat? Motorcycle, hour wheeler.... am I being out of line by saying “no, stay in tonight and save some money”.... I feel bad