I'm having a dilemma

so I'm really into my bf and were getting to that point in a relationship where I really feel like we could have sex at any moment and it woukd be great! but I'm a virgin and hes not. I feel like if we have sex he's gonna get bored of me and not want to talk to me anymore. I know its ridiculous but thats just how my brain wants to work its way through this. please comme,t some advice or whatever bc I'm really struggling.