Sexually frustrated

My boyfriend and I have been together for a year and some months. It seems like every time we have sex he plays with me a little and then we end up having sex, and he finishes and I'm left unsatisfyed. It might of happened once that I didn't have to fake and orgasm. So now I'm wondering Is it all my fault?  And I don't have the heart to tell him I've been faking orgasms because I don't want to hurt his feelings. I love him.