What's going on with him or I 💕🤔

My boyfriend and I have been together over 3 years. I was 24 when we got together I moved in with him after 4 months of dating. I am now 28 and He is 36 years older. The first year it was all butterflies and all great sex. By the second year together we gradually stop having sex and I was kinda happy because i am just lazy tbh. So it's been 2 years we have not had sex. And we live together. He says we stop having sex because I go out and drink and smoke cigarettes and he doesn't like that. So I am guessing the smell of alcohol and cigarettes turns him off. So now I try and not drink and smoke but still do. About 3 months ago I asked if he's cheated on me he said no so I asked him what he does to cum, then he told me he watches porn. He didn't really wanna tell me but I kept insisting on the case. I got very offended and we did not speak for about 3 weeks even living together. We just ignored each other. I've found socks with his cum in the past like about 8 months ago and When I confronted him about the socks he said I was crazy but I did notice he stopped cumming on them as he was using them when he watched porn. Ive never caught him watching porn or been on his phone so idk what if he watches this in his office since he owns his business and has his own office or when I'm not home. So basically idk what to do I have not had sex with him for approximately 2 years he says he has not cheat on me and loves me. We don't fight it's rare now and we cuddle daily but I want to know how to get the fire in my relationship BACK???

Any advise ladies.

Thank you all in advance. 💕💕

He tells me he wants to have children with me but I need to stop smoking cigarettes and drinking. We both don't have children. 💗