The world is full of them. These are the friendships which start off great and end up debunked.
I have worked it out. The more you do for someone the more they turn you away. I have had this happen several times now. I have been there for my friends, gone out on a limb for my friends to only find out they talk behind my back and cannot bring themselves to be civil.
What is wrong with some people? In my case, I have even tried to keep to myself, mind my own business and go about my own business and then I have neighbours talking behind their hands about me. What the hell is going on.
I keep a distance now and only if I come to really trust someone do I go the next mile with them.
Bummed friends, struth, what is their problem.