Marriage stagnating

I love my husband, but I'm not "in love" with him anymore. We share fewer and fewer interests, our sex life is mostly reliant on pot, and even though we've talked about it several times since early last year he hasn't made any effort to meet my needs. I don't doubt that he still loves me, and he's my best friend and someone I want to remain in my life, but our marriage feels like a deadlocked bargaining table and I have nobody to open up to without being judged for not being ready to start escalating my approach ("put the foot down" or posing ultimatums). ***EDIT*** I have tried to get him to go to marriage counselling and he refuses. I'm at the point of suggesting activities I already know I hate but all he's ever interested in doing is fishing or playing video games.