desperately need advice 😭😭

I'm 17 my boyfriend is 19. I was a virgin before I met him however he wasn't he. He had one seriously relationship before me. For some reason I can't stop thinking about him and his ex and how they've shared an experience that me and him have except theirs was more special because his lost his virginity to her. Is what I'm feeling wrong or right? It's literally on my mind 24/7. Also we got herpes off her. When it's on my mind I don't like having any physical contact with him. It makes my skin crawl but I think about them both having sex so often. WHAT DO I DO 😰