Today is my birthday and my friends have not said happy birthday to me?

[CrazyBunnyPuddin]

This might sound a little bit paranoid but I have a few close friends (or so i thought) and i remember their birthdays all the time, not once have i ever forgotten my close friends birthdays. but today its My turn, My Birthday! and none of my friends whom i thought were the greatest, the awesome, the nicest friends I've ever had since middle school. NOT ONE OF THEM said happy birthday to me, and we've been friends for a long time too. (No texts, no e-mail messages, no facebook posts, nothing at all) It hurts and makes me feel like i was not important at all in their lives, only to fill a empty void or spot. (except one dude but we barely talk). should i forget about all of them and go about my life? what should i do? should i cuss them out if i ever see them again? or when its their special day, should i do the same thing to them like they did to me? I honestly don't want to do that because no one wins there and it would make me just like them. please help! (by the way: I'm 22 years now).