I'll add just a bit more to Altair's comment about him having a blast. Sure, it's exciting, new and fun to be "single" again, but that will get old very quickly. When he's alone, w/o distractions, his mind continues to whirl around and at that time, he has nothing to do but think about you and what he's done/doing. When they are alone, especially at night, is when the demons/thoughts come out to play. Some sit in their little rooms and stare out the window or at a wall. Some sit and cry and others toss and turn on the sofa in their beds, but they may run, but they can't hide from those thoughts for very long.
I wouldn't want to be in his head or be him during the crisis. There is a lot of emotional pain that they suffer from and it's there and the only way he gets relief is to run and find things that will make him feel better...but that "good feeling" won't last long and then he's on the move again, searching and searching for something to make him feel better once again. One day, he just might run out of things that make him feel better and he'll come to realize that happiness comes from within and he needs to look deep within himself to figure things out.
Nothing is as it seems right now when it comes to the MLCer.
You need to dig deeper for patience and have faith in the process.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.