First time

My boyfriend isn't a virgin, and I am, I'm pretty sure he's the one I want to lose my virginity to. I'm just a bit worried it won't be as good as his last time? I dont mind that he's done it before its just that I know the girl he did it with and she's beautiful!! I'm bi, and I've actually had a crush on that girl in the past and even kissed her 😂 it's a bit weird, help?