sometimes we refuse it bc we think we dont need it or just dont wanna talk to someone they dont know about there problems. Like me im a teen and my parents took me to a therapist and i hated it. I didnt want to say anything at all about what I was going through.
If you worried that you don't deserve him its okay because you do. Just be yourself and since you mentioned already that he likes you I think you will be just fine :) Good luck and have a wonderful day