Friends with benefit birthday wishes?

I got a guy friend i have been sleeping with we chat about once a week not necessarily about sex but he seem to be interested on what im doing at school. We have been friends for a year and we only had sex twice. I once asked him what do we call our relationship he said excitement. I recently found out he has a girlfriend he bought her gifts for her birthday and with me he never did, ow well i never told him when it was my birthday. I was so hurt when i saw that. I want to tell him that i want a real relationship if he can't give me that he should leave me alone, but is it ok to say it on BBM since he is always busy ( he is a docter)? Right now i feel used and im still mad at him as i sent him a text on Friday he only replied it on Sunday but he was the one who initiated conversation. Today its his birthday is it a good idea to wish him a happy birthday or i must just keep quiet? And how do i tell him that i want a relationship without sounding desperate?
Friends with benefit birthday wishes?
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