What to do

I have a modern day conundrum here; my good friend C. passed away at the end of May. Every time I log into MSN messenger, I see his chat name and his last tagline “C: sitting in the sun & loving life”. I can’t help but be a bit creeped out. I also feel this intense sense of guilt when I even contemplate deleting him from my chat list because it makes me a sad whenever I see his name there and know that he’ll never be logging in again *sigh*