This is getting worse with everyday that goes by, in the evenings and at the weekends, I don’t see anyone, excluding Brazilian Jiu Jitsu training and the family, I no longer have any friends and for what reason I don’t know, I’m continuously trying to figure out why. I know it’s partly to due the fact most have gone to Uni and I’ve stayed at home to work. But this can’t explain the whole reason why I am lacking a social life, I have no problems with confidence, I can talk to anyone and have a laugh.
For example, it was a “friends” 20th yesterday, I confirmed that I’d be able to go to town, but I spent the whole evening trying to contact them, it turns out they decided just to go and forgot all about me… this seems to happen every time
Anyone else had no social life? How did you go about creating one?
I am worried, because the more I don’t have contact with others, the more depressed I feel and I want to get under control and finally start having some fun with my spare time… plus as far as I can tell, if I can’t hold down any friendly relationships, then how can I hold down any relationships with women? :S

Be yourself around others and nurture the relationships you feel are uplifting to you.

I was going through a similar situation.

I wasn't happy with the social life and "friends" I had, so I got rid of them. I became more comfortable with being alone and enjoyed it quite a bit. I learned to have fun on my own. I read books, watched movies and went out to the beach and parks.
During this time of solitude, I changed myself, from the inside out. I stopped being depressed and looked at the world in more positive ways. I decided on what kind of person I want to be.

"Public opinion is a weak tyrant compared with our own private opinion. What a man thinks of himself, that it is which determines, or rather indicates his fate." -H.D.T.

Once I started to think more positively about myself, the life I have and where I'm going, I finally felt happy. I still didn't have the social life I yearned for but I was feeling good about myself. I started to look for people that I shared similar interests with. I realized that my old "friends" weren't into the same things as I am. As I began to speak with more people and finding the ones I really liked, I put effort into cultivating those relationships.

In conclusion, I would suggest be positive and stay positive. Be yourself around others and nurture the relationships you feel are uplifting to you.

Best of luck to you brother

-Main