I think a lot of it is fear based. I know it's a MAJOR reason I don't initiate intimacy. If that is it though, I dont know how to get past that, especially at my age. :-(

As far as my family and friends setting me up... I dont necessarily think its intentional that it happens. In most cases, I just happen to meet or be introduced to them through circumstance. If it IS intentional, it is probably due to the fact that I have social anxiety and am VERY socially awkward and stressed dealing with ANYBODY, let alone a person I'm interested in...