It's one of those things you just don't think will happen. I am a fan of All Saints and first saw Mark on stage in Perth in Black Swan's production of Cosi in 2000. I went to uni with his ex-girlfriend's sister.
I guess what you see about a person on screen doesn't reflect their real life. We should already know that but I often believed he really was his character, Dan Goldman. For someone to feel that suicide is their only option is a terrible tragedy and waste.
My prayers go out to Mark's family, friends and castmates.