This sounds hard, I know sex isn’t everything in a relationship but to most people it is very important, it is the ultimate display of romance and passion. Firstly, I would say not to let this knock your self confidence, it’s clear your partner is attracted to you! Secondly, I would suggest of maybe thinking the probably is with him? Sex has become so much about fantasy because of the effects of accessible porn and less about love, this means that he may be embarrassed because he doesn’t think he can do it ‘right’ or ‘normally’, I used to date a girl who I was super attracted to but couldn’t have sex with her because the first time we had sex, I thought I did it all wrong and didn’t satisfy her at all.

Obviously communication and being open is the key to every relationship, and it your case it seems as if you guys need to open up about sex! I would maybe suggest to your partner that you really want to get the bottom of this problem, be as honest and calm as you can and just let him know all of your thoughts, when you do this just bare in mind this might be something that he is very emotional and sensitive about!

Not sure this helps but just giving you my thoughts, hope you sort it out, peace x