First time sex

My boyfriend and I are going to have sex next weekend and I'm like really excited and kinda scared, we've been together since 2 years no and he's just been so sweet and I think I'm ready to give myself to him but I'm like really exited and nervous. I'm 19 and idk I mean how can I feel comfortable being naked and seeing him like for the first time I'm scared I wont be sexy or have to laugh or even worse that he will have to laugh at me😩😩😩😩😩😩😩😩😩