What should I do? Need advice

I’ve been married now for almost 3 yrs n my hubby n me have been together for almost 6 yrs. I’ve noticed before we were married we barely had what I call “Sexy fun time”(sex) only once every few months or rarely at all. He is twice my age(please be respectful) n I have confronted him on why he barely shows me any affection while we have been together. N he simply says that he’s not in the mood for that or he just doesn’t want to. I’ve also told him that he makes me feel like I’m not wanted because of that. He doesnt really say anything bout it. One night we were in the middle of “sexy fun time” when I noticed he wasn’t himself so o had asked what was wrong n he told me nothin n to continue so I did then the answer that he gave me kinda had me wonder what really was goin on? So I had asked him again what was wrong then he finally told me that our sex life was boring n that our relationship was boring. I had asked him why would he feel like that n he never said anything. So I told him that I would never say that n that he needed to sleep on the couch so I can have my space. I cried myself to sleep that night. Now I think that maybe I’m not attractive to him anymore since I’ve gained weight. Til this day we barely have sex. Was I wrong to make him sleep on the couch? N what should I do?