My boyfriend and his weed

My boyfriend smokes a lot of weed and I kinda went along with it and acted like it’s okay when deep inside I thought it wasn’t. I’ve even tried it just cause i thought it would help me connect with him more. It doesn’t. It just makes me more paranoid about shit and makes me panic. I don’t like it. Anyways I just let him take this way to far. I never thought it was a addiction but I understand it more. It’s more of an addiction to how it makes his emotions feel. Without it he’s a total mess and he takes it out on me. I don’t wanna leave him cause I’m deeply in love with him and I can’t do this cause he’s going through really deep depression especially without it. I don’t really know what to do. Any advice?