Sexual Past – How Do I Get Over My Boyfriend’s Sexual Past?

From a young woman in Italy: I usually never ask for help online but this matter is really bothering me and I can’t seem to get over it. I have been with my current boyfriend for almost a year now, but his past sexual life makes me feel sick, not because I find it disgusting, but because it boosts my insecurities. Me and my boyfriend were friends for three years before getting together. I know that before meeting me he had a very active sexual life, the problem is even while we were friends he used to tell me about his experiences and most of them where with mutual friends. Some of them I am still in touch with.
I can’t get over the fact that so many people I know have seen my boyfriend naked, and touched him and all that stuff.