You know, the sun will shine again and sometimes the clouds will cover it. Sometimes the clouds bear rain and lightning, but they will aswell also disappear one day.
Also, I don't know how the relationship is between you and your friends you mentioned, but I think it's never too late to repair damages no matter how big they are. If you really want these friends back and maybe also keep your ex as a friend; try. If you try and they don't accept it, you've at least done your best and if you have, maybe they'll come back.
Take care, dude. Who knows? One day Slash and Axl maybe need some new money.. ;)
Peace Sells... But Who's Buying?