sex with new guy?

so i recently started dating a new guy and he's been dropping hints about having sex and i really would like to but i lost my virginity to my last boyfriend and with him i didn't really care what i looked like bc i was comfortable with him, this new guy is very shy and he's really attractive and i'm nervous bc i don't like the way i look and i'm very insecure and i'm worried that he'll think i'm gross. how do i get him out of his shell and make myself more confident