He’s perfect on paper but...

I’ve been going out with my bf for 5 months now and things seem to be going well. He’s kind, caring, always puts me first, complete selfless and devoted to me and treats my siblings like family.

However, I feel like I’m some places we just don’t click. Although he’s lovely I feel like we are sexually incompatible and certain things about him annoy me beyond belief and the thing is it’s not even his fault it’s just how I feel. All my friends love him and he says he could see himself marrying me one day but I feel myself acting colder and colder towards because of how different we are as people.

Here’s the dilemma. Breaking up with him would kill him and it would kill me. I also don’t want to throw his life into a tornado. He’s taken the time to start saving money and plans to go back to college to get his life on track because of me and I don’t want him to lose motivation but idk if I can continue with the relationship.

I feel smothered by and I’m losing interest rapidly. I truly feel that he deserves better than what I can offer him right now. Any advice?