First off, break up with the dude you're currently with. No need to drag him along for the ride if you ain't even feelin' him for real. If it didn't work out, it just didn't work out. Of course you're going to have some feelings for the old guy if you recently broke up with him. But uh, yeeeah, I heard 3rd time's the charm. Not bajillionth time's the charm. Let it go. You should still be friends, but space yourself from him until you're chill.

See Dr. Njord. Maybe he can set up an appointment with you.