Sick of my boyfriends new addiction, seriously is there anything I can do?

I asked a similar question but In 5 days the situation is even worse. He's addicted to magic the gathering. Don't bother responding if you think you can't be addicted to a card game... you can. (Blackjack is a perfect example).

He's not spending anytime with me or his newborn daughter. He plays the game from like 6pm to 7am with no breaks, he's spending $200 twice a week and I don't know how he's affording it (has not spend any-I mean $0 on his baby), he stopped talking to his best friend because he plays too much, and he watches youtube for hours on end of people opening card packs.

It's like he almost gets off on it. I already asked his friend for help but he didn't... i guess they aren't buddies anymore (this is a HUGE red flag). He's even showing up late for work because he's up all night playing. I'm assuming there's nothing i can do for someone's addiction. What type of ultimatum can I set before I leave? Can I ignore him? We pretty much do anyways... I have not talked to him about it because he just gets mad and I already know he doesn't see it as a problem even though he's losing everyone in his life... what can I do he doesn't have any other hobbies because he's lame.

Sick of my boyfriends new addiction, seriously is there anything I can do?
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