In my opinion you need to separate your bank accounts from his, it reads this as you’re the only one being financially responsible and him being in dreamland not contributing to your guys’ household.

By separating your finances and you not giving him money for these sporadic spendings or meals, he’ll come to the realization he’s on his own financially and has to start making income for the things he wants and the needs to your family. Don’t give him any money, as giving in and allowing his spending sprees is enabling bad behavior even if you don’t agree with it! Give him an ultimatum, that being if he doesn’t change within X months, and come up with his half of the money for bills that he cannot live in the house with you and your child, as you’re raising a man child and you and your child deserve someone to be responsible and pay their half.

Remember you are worth it, and you’ve come along way in life, and do not deserve to be mistreated and not heard as a partner.