Remember the three c's:
you didn't cause it
you can't cure it
you can't control it

my ex recently turned crack head and destroyed our relationship, sold all of our things that weren't nailed down, put us into major debt, and screwed up all our utilities.

He turned into somebody else and only cared about the drug. He was erratic and crazy, but kept making me think I was. Crackheads are excellent manipulators.

My advice is to protect yourself, financially, emotionally, and physically.
If your friend is not interested in getting help (and why would he if he's selling and making decent bucks? That way he can get more $$ for more crack...The only thing he cares about)
then I would dump him. Crackheads rip people off, they will steal from their mothers, anything to get more crack.
T
here is a small chance that he will come out of the addiction but if he's selling and has that type of lifestyle then he is prolly circling the drain, and will suck all those near him down too.

Don't lend him money that you don't mind seeing ever again.

I joined an online support group to help me get through this. I also go to the face to face al-anon meetings. They really help.

Hope this helps you