Ok, I have a BIG problem with this...Cause it sounds like a
test. Which is stupid and immature. If you want him to remember your birthday, then remind him. If you don't care, then don't. Don't make it into a "well, if he CARED about me, he'd remember it all by himself!" Cause I seriously doubt there's a correlation between his level of affection and his ability to remember a string of (basically arbitrary) numbers.
I never remember my dad's birthday, but I still love him and respect him and thinks he's the best dad in the entire world. I'm terrible about dates for shit...that's what calendars are for. They tell me when all the important stuff happens (like days where we get to eat lots of food). Also, as pointed out, the media helps a lot for those other shopping holidays like mother's day and father's day.
My mom on the other hand can remember the birthdate of her first dog (ok, slight exageration). Doesn't mean she loves the dog more than I love my dad.
The best way to measure someone's affection/love/whatever for you would be to ask them. Don't wait for them to take the initiative, cause they may be waiting for you...
so, basically, I agree with Mal...