I'm heartbroken. We found out he was FIV positive shortly after we got him, but that doesn't make the loss any easier. He was only 1.5 years old. Hold your cats close for me tonight.
Edit: I fell asleep, so I'm sorry that I didn't respond to everyone. I'm very thankful to everyone for the kind words and support.
I'm so sorry to you both. Losing friends is incredibly hard!