I agree with the other posters who advise you to find some activity you enjoy doing and get busy. Maybe you will meet someone else if you go regularly, since they will share your interest, and they will anticipate seeing you there.
I've been caught in Ni-Fi loops, and they can make you become so unrealistic that you refuse to accept reality and keep trying to fix something that you lack the power to fix because you want the situation to be something other than what it is. Look at the facts. You don't have to be happy about them. You do have to accept them. And you must find a way to be happy again.