Considering he is your first,and you do not have a high level experience,I think you were lucky to orgasm with him even the one time
For some women,it can take a high level of trust and comfort before you feel able to really let yourself "go" in front of a guy.Which is why you felt more at ease when he was blindfolded...
I really didn't get that level of comfort myself until I met my husband and we were together for a while.
Plus it also takes time to learn what positions work best for you and how sex differs from masturbation.
Give yourself time and just keep working at it.