Don't feel anything when I'm riding in top

Ok for starters in 16 and not a virgin, I'm on Birth control and take it like it's a life line. I'm not dating anyone because I just don't wanna be in a relationship. I've had sex with this one guy a couple times and last time he had me ride him. The thing is he said I was amassing at it but I didn't feel anything, I couldn't get any pleasure. Now every time we've had sex Its been in his truck idk if that makes a difference. It's not him because when in in front with my legs on his shoulders I fucking shake. And he always makes me cum, but I just have no feeling when I ride him. And again I don't wanna get bashed, he's like my best friend. He hugs me and lets me cry on him when I'm having a hard day. The only reason we aren't dating is nether of us want to put a label on what we have. I just wanna k ow if anyone else has this issue or if I'm not positioned right for my pleasure. We did both face to face and reversed cowgirl ( idk if it's still caked that )