My boyfriend and I are long distance and he wants to get into the sexual part of our relationship and idk what to do

My boyfriend has been making some mentions of wanting to see my body, without clothes, and I don’t know how to tell him that last year I was inappropriately touched without my consent. It’s gotten scary for me to try and tell him so I chicken out. What should I do?! I love him so much but I get scared of having someone use me again.