Should I Hold Out a Little Longer To See if Things Change?

I have been dating a man for about a year and a half now and I am confused as to my feelings about him. Just to give a background on me, I dated someone previous to this man, who I was totally in love with and wanted to marry. He didn't feel the same way about me and ultimately we broke up. I met my current boyfriend about a year later (so i had time to heal) and we started off slow, only seeing one another about 2x a month (every other week) because of his schedule (he is an entertainer in the business of acting/performing and I don't want to give away too much because he has a ton of fans and friends and i don't want anyone to catch on if someone should read this). He travels a lot and when i can go with him, i do. When we are together we get along great....when we are apart, we also get along great but the biggest issue I have is that he is SUPER sensitive. He takes everything do personally and can never admit that he is either overreacting or being unreal about expectations. He can be somewhat immature and has a HUGE 'me me me' complex. He has a terrible relationship with his mother/father/sister and at times has cut them out of his life for days/weeks/months (even a year or so) since we've been together. I am very into my family and while we have our issues, we would never go days or weeks not talking. The more I think about being with him, the more anxiety I have. I have been single my whole life (never married) but been in plenty of relationships. I'm 36. I went about 4 or 5 years without any steady boyfriend, and while it was fun (sex, dates etc), I was lonely.
I love being in a relationship but not sure if he is the one for me. I keep comparing him to my ex in every which way which isn't fair.