@20SomethingYrOld,
It's been three years. You're beyond the moving on stage and into the stop obsessing stage.
Go out and meet more people. Talk to strangers. Go to Meetups. Take a class. Plant a garden. Take up knitting. Join a gym. Learn acting. Volunteer at a nursing home.
In short, shake up your routine and do it in such a way that you are around more people and you develop a wider network of friends and acquaintances.
Don't wait around for magically getting over this guy to happen.
As Gandhi said,
be the change you wish to see in the world.