I’ve been lonely since I was a child

I’m a female and I’ve been with the same guy since I was 18 (I’m 27 now) and my problem is he’s a bit socially awkward, he doesn’t really make friends. He’s a great guy but I know he never wants to extend our social circle. I’ve only had 1 real friend since I was 18 and I’m a social person. I want to meet new people, make friends, have a large group of friends but I don’t know what’s wrong with me. I’ve been with the same 1 friend since I was 18. I just wanted to talk to my group of friends with my guy by my side but that’s too much to ask apparently. I’m tired of being lonely in all my relationships, with friends and my partner. Can you relate to me?