Am I doing this wrong

So I have been dating my boyfriend for almost 7 months now and I’ve known him for over 1 1/2 years I lost my virginity to him and I’m 21 years old when I last virginity to him. all my friends seem to talk about how amazing sex is and how they’re always coming..I love my boyfriend but I don’t feel amazing when I’m having sex and I have never cum for past three times we had sex and I always feel like he’s not enjoying it if the sex is not good does not mean our relationship won’t lost. Or maybe I’m doing something wrong because I’ve never had sex before what can I do to make him enjoy sex and make me cum for him