Relationship Issue

I'm have a problem I don't seem to be able to get rid of. I have no friends. I have had two or three friends for about 15 - 20 years and both have turned on me. I've had people who make every effort to know me and then begin treating me as if I were dirt. I'm not a passive person but not an ugly person either. I am a loner but I do many things outside of my comfort zone. I do my best not to hurt anyone intentionally or otherwise but find that men are my best friends. Most of the women I know don't care for me. In fact I am currently the target of being excluded from many areas at work. I really don't mind the exclusion because drama is not my thing.

For example, I wanted a nice ring. After looking around I decided to visit a pawn shop and found a beautiful estate like ring and with a mine like stone. I'm sitting at my desk engrossed in my work. I got everything from that looks as if it belongs to your grandmother to how much did you pay for that, to my ring is just about two carats to I'll bring in my setting tomorrow - to which the word spread through out the office.

Can someone help me see what I'm not seeing? I'm 57 but obviously I have not been exposed to the nuances in life that "make you something" if you have a certain item. I don't smell, dress moderately, if I see something I want I get it, and no bragging is not my thing. As I age, I'm liking my home more, doing things at home or working in the yard. I am diagnosed with depression but not a weepy person. I did become a little more distant from my male friends as I came to find that some had other ideas.