I think I’m not in love anymore

My boyfriend and I have been dating for almost 9 months and we’ve been getting in the same fight every couple months about him not being there for me, or cancelling on plans last minute, or not coming when I was sobbing on the phone cause I was having a mental breakdown. Leaving my family gathering early, not taking interest in my hobbies that kinda thing. I’ve realized I have become independent without him and basically don’t need him anymore. Our conversations don’t have any joy in them anymore, the only thing that was really good was the sex and I don’t think that’s a reason to stay.

Lately him touching me in that way makes me feel nauseous and gross in my own skin. I don’t hate hanging out with him but I wish we were just friends again. I’ve never been in a serious relationship and I don’t know how to tell him I want to be single. I don’t crave being around him at all. I’m not attracted to him anymore and that’s feels super harsh to say to him. I’ve been warning him for months if our dynamic didn’t change I was going to resent him.