Should I remind my guy friend of my birthday?

yes. Well your guy friend is narcissistic, but that is another issue. Guys, all guys, forget dates like birthdays and anniversaries and important events, they just do. Yes, you need to remind him of your birthday and keep reminding him and you might even drop hints as to what you would like as a gift or where you would like to eat out, or maybe go to the beach or whatever you want to do on your special day. It is frustrating and Jeff Foxworthy tells funny jokes about this, but really it is all guys that forget and all girls that get upset.