I too pretty much went from having a fun friends group to now having none. My pastor today said an interesting thing. He said that men, do not know how to socialize. If you look at them at a party or a dance, they pretty much just stand there. They might comment about sports or cars but go back to just standing. Women, know how to socialize. They stand and chat for hours, and that's just at the grocery store. They chat on the phone, they go for girls weekends, and they do jewelry parties.
He went on to say that it was like this because men started going off to war, and were not around to show our boys how to become men, and so that important step was no longer passed on. Since the women were the only ones here, the only role models the boys had were the solo, too tough to fail, big screen hero's. Not realistic, but it makes sense if you look at how men interact in general.
The point I see here is that you are just a product of what was put into you as a child and there is nothing wrong with you. You are not doing "Bad" things, you are just doing different things. If you start to make some changes, you are bound to get some different results.
Keep Moving