Now add some details to your situation.
I've been friends with this guy for several years and he's been going through alot lately (more accurately, he's been putting himself through alot lately) and a few weeks ago he quit talking to me and I don't know why (although I have my suspicions that he's done some things that will hurt me incredibly bad when, not if, I find out about them). His birthday is coming up and throughout our friendship I've never missed his birthday. I'm wondering if I should send him a birthday wish or if I should just leave him alone since he's not talking to me anyway.