I'm so touched you shared your story with us.
Every now and then I get a little anxious about my partner's history. Let's just say he was "popular" to use a euphemism that isn't too negative.
The way I deal with it is reminding myself that he has a story, too. When it comes up I always just say, "My one hope is that all those encounters brought you pleasure and led to happiness." I actually feel that way now. I think it was stuff he had to go through. Whether I like it or not, it's part of who he is, and he is a person I adore with my whole heart.
Be kind to yourself today. We're all thinking of you.