@Aec-2016,
Depends on why it wasn't good. Did he tell you it wasnt good?
Why do you think it wasnt good? Did you both get off? If you did, it was probably good enough for him. LOL.
There is a chance that you thought it wasnt good enough but he was just fine with it. If you are both fairly young and dont have much experience than this might be the case.
Honestly though, If I like a girl enough, it wouldn't really matter. I would probably cuddle with her either way. So, regardless of what he thought about the sex, he probably likes you quite a bit.
Plus, in my experience it might take a few tries with someone to have really good sex. Always beware of someone who is "really good in bed" usually means that they have had a lot of practice. (with other people)