I have a new boyfriend but I’m scared to get intimate

I’ve not been with my boyfriend for very long, and he’s said he’ll happily wait for as long as I need before we have sex and everything.

The thing is I’ve only ever been with 2 guys, and things ended badly with both, one ended up only using me for sex and I don’t want that to happen again. I also have a load of self harm scars from years ago and cellulite that makes me so self conscious.

I really do want to get intimate with him, but I’m too scared, any advice?