The only advice I can offer is tough love. It's said you have to be cruel to be kind and some people will use you up without stopping to even consider the emotional drain they're causing. I know it's not easy to just say "I'm not helping anymore." but sometimes it's the only thing that will make them take a good long look at their actions... unfortunately for some even that won't do it. Wish I could offer some magical charm for the problem but I've definitely been there (((((((Lou))))) I wish you the best.

__________________
As to marriage or celibacy, let a man take which course he will. He will be sure to repent - Socrates

Love is not looking in each other's eyes, but looking together in the same direction - Antoine De Saint-Exupery