Hi Googley,
I'm so sorry... I know just how this hurts I have been there before too. I think sometimes when we are down, other people sense it and they don't know how to relate and they just pull away. It's totally not fair, but it is totally their loss. Some day any one of your friends may be in your position and might experience the same thing... Do you have any other friends other than them that you hang out with, like a friend who is not associated with them. Maybe you could make a plan to go out an just get a cup of tea/coffee. Or, if you're feeling brave maybe you could try a whole new group. Did you ever look on meetup.com? Do you have a certain something you like to do; like a read a certain kind of book, gaming, or do a certain type of art or craft? There are groups that meet over stuff like this and it's amazing how you can get to know others in such a short period of time. If these "friends" are hurting you, let them go. It's their loss and there are others who might be able to relate more to where you are right now, and you to them...