Sorry you're going through this. Loneliness hurts. I used to think I was very introverted until I lost almost all of my friends, being alone all the time gets old fast. I do have a grilfriend which I love very much, though we're not in a good place right now. I feel like I can't connect with others anymore, it feels like I'm numb to everybody else, like a black hole eating me away from within.
Being human means we all need each other to varying degrees, but some of us just don't fit in. It's a sick joke to need something you can't get.
Hang in there, you still have time to make things happen.