Oompa, there was a time I felt just like you. I missed my old friendships and I was very alone.
Honestly, you are better off. Eventually you would say something or a personal matter shared with your old friends would become fuel for a JC committee.
This could mean your being DFed before you felt ready.
My advice, don't considered them your confidantes any longer, keep your emotional distance. If you do associate with them at all let them drive it, and if it becomes too stressful, just fade away.
I would also reach out to faders you were friendly with before they faded. You be surprised, they might be prove to be a great source of encouragement to you or they may feel the same as you and prove to be a good friend.
After all you guys will have fading as something in common. That's a start.
Maybe join a gym, or engage in some community service. It's a great way to meet new people and at the same time, you are doing something good for yourself.
Good luck, it gets better with time.