Advice/opinions please

Hey ladies, I'm just curious if anyone else thinks this way. For starters I am already very insecure, always have been always will be. It comes and goes, some days are just worse than others. Recently, I've be obsessing over the thought that I'm not good at sex and that I am boring. I keep thinking "what if I'm not the best my SO has had" or "what if he thinks I'm boring.." I don't want to say anything or ask him though because I'm afraid I'm going to get the answer I've been obsessing over. Its not like the sex between is is awful, hes the best sexual partner I have ever had. I don't know.. I just worry that the feeling isn't mutual. Does anyone else ever think or feel like this?? Its been getting me down. 😞

Edit: Well we were trying to have sex with me on top. I got super insecure, started crying, and he reassured me telling me how much he loved me and thst I was beauitful/perfect. We then had sex and he just made it all about me..it was amazing.