Anxiety in bed??

Me and my boyfriend have been dating for almost a year and a half and we havent had sex because I am a virgin (hes not) and I dont want too(which he is fine with cuz he is super sweet) and I cant cum. From fingers or clit or anything from him, but I can make myself cum but when we are in the moment im all up in my head because I feel like he wants it so bad and so do I and its like a brick wall has been placed in front of me and I cant get around it

Does anybody have any advice for this?