Do you feel like you have to tell your partner EVERYTHING?

I want to know if anyone feels the same way as me. I feel that I have to tell my partner everything. Any shitty thing I ever did as a child he knows. All the bad thoughts I’ve had but didn’t mean anything he knows. I feel like if I miss any part of my life then I am not being truly honest. This could just be a little socially inept thing that I do lol.