Not really any advice but just venting

My bf and I broke up last week. I realized that we weren't happy anymore. We weren't getting along, we never had sex anymore, we were always fighting, and just not happy anymore. We had a pretty adult talk, we sat down and discussed it. And the only reason I'm so upset was bc he was my best friend. Like, if I were upset I would call him. And when we broke up I had no one to call about it. He was trying to save the relationship and "change" but it was pointless. A few months from now we would be in the same boat and still upset. And we figured this started six months before hand around our first anniversary when his nephew was born and I started having the family talk with him and our future. I never realized we spent six months so upset and we only did anything in the bedroom four times. We still want to be friends but I feel like those feelings will always be there for us. We've talked everyday since the break up bc I was the one who did his taxes and I've gotta show him how to access all that stuff and I have to give him his stuff back.