Personally, I'd feel relieved in this situation. This is a clear sign that he has no interest in you. None. Now you can move on, finally.

If he felt close to you, as a friend, he would have notified you of the visit.

He didn't. He doesn't. It sucks. Get over it.

Personally, I would unfriend him. What is the point? Seeing his posts on FB just is causing you mental stress.

Time to move on.

This.

He dumped you, it hurts, but he has made himself clear. It is hard to do but for your own sake you need to get over it and him.

Sorry to hear.

Again I agree with Misti, he's not worth it.
You'll just get hurt again.

I would also say I found myself in a somewhat familiar situation a few years ago, I figured if I was going to move on, I had to separate myself from my ex. We went from talking nearly every day in some manner to just occasional email. Even my email replies over time became shorter and non-existant. His emails to me over time included his wedding pictures, pictures of his kids, etc. I had moved on though so those things didn't bother me and I was able to find someone who did love me and want to share his life with me.

Wow, i'm so sorry. He might be moving on and didn't
want you to know as he knew that would hurt you.
Men can be less than sensitive sometimes. He might
not be aware you still carry some residule feelings.
I know it takes time to get over him but were it me, I
would agree with John on this, to 'unfriend' him.
Disengage in knowing anything about him. Maybe get
self indulgent and wrap yourself into YOU for awhile by
creating the you that you plan to be. Before long you'll
be so far from where you are now, you might even be
dating new prospective partners by then. It's his loss.
The best of luck in whatever you decide. ((hugs))