I lost my best friend quite some time ago. For whatever reason, on a very bad day, we exchange some pretty heated words about something stupid. Then, that was it. We never spoke again.
If it's any consolation, I was able to make new friends - it did take a few moments though.
I lost 3 of my friends a little time ago too. I was really depressed about it, but I thought of my boyfriend, and my other friends and most importantly: my family..