Was i being selfish?

Yesterday was my Birthday! I can't remember the last time I had a party or received anything for my birthday from anyone except a happy b-day text from family. So, I have just accepted the fact that birthdays are treated like every other day. I have associated my birthdays with childhood memories that aren't very favorable. So, I'd rather not celebrate it at all. My new boyfriend's daughter is the same day. I told him, make sure she is taken care of on her birthday, don't worry about me. While she is opening gifts, I received a phone call from my little cousin wishing me a happy birthday. He excuses himself and asks me who was that, I told him he didn't believe me and the rest of the time, he is acting sideways. I was already sideways because his daughter informed me of what her and her brother think of me, not very good. But they don't even know me. Anyway, we got into an argument about me not being appreciative of him trying to do something special for my birthday, (he bought me a diamond ring) but I was overwhelmed with joy and that is the reason why I cried. I have been providing for myself for a long time and I just didn't know how to accept that a man, MY MAN, is trying to show me how much he loves me. I feel I was wrong for bringing my past horrible experiences into our beautiful relationship. I felt sad because of my past but joyful because I finally have someone who cares. Now, he is kind of upset with me and says he will never do anything for me again because I made him look like an asshole. HOW CAN I FIX THIS?

Without making excuses for WHY you behaved the way you did, why don't you just tell us what happened (in sequence) after he gave you the ring? what you posted was clearly meant to diminish your responsibility, and we can't help you if we don't really know what happened.

Thru the plain old conversation,just talk it over,make sure he understands your feelings the best way he could.