Nervous about new boy

Hey. So I came out of a toxic 2 year relationship about 6 months ago and I have got back in touch with this boy who used to go to my school. We have been talking 24/7 and I like him. We also go to the same gym but I can’t ever find the guts to talk to him in person, which I know sounds stupid. He wants to meet and we have spoke about having sex, I really want to but I’m nervous as the last time I had sex was with my ex and he was my first, he is all I know. I’ve never had another boy a part from him. Any suggestions on how to be more confident about it and the sex ?