working,
I didn't literally count them, but do you know how often you used the words "expect/expecting/expected" in your post?
Expectations are at the bottom of so many of our emotional upsets. They are, essentially, premeditated resentments. I know it feels as if you aren't expecting "much" -- a card, a call, a text on your birthday, but at this point it seems obvious that any expectations you have are going to lead to disappointment.
I agree that for whatever reason, he is not into this relationship right now. I know that is disappointing. Not all relationships work out. I think the sooner you let go of this one, grieve it, and move on, the better you will begin to feel.