Have you thought about taking part in any community or group things? Maybe you just need a connection that feels like you're needed? Friendships are great.. but when you're in a relationship it's like that other person needs you in their life. Do you think volunteering for something like Meals on Wheels (do you have that in the USA? Where I'm from it's a program where volunteers take meals to elderly people who have difficulty leaving their homes.. it's also usually a way for those people to have social interaction and some people probably assist with cleaning).

Anyway... that's just the thought that I had.