How do you move on, handle this, confront him, etc?

Best way is to put one foot in front of the other and walk through it. he's obviously moved on but you haven't. (like my ex g/f and I - she moved on & I'm trying to)

No matter what you think or feel, there is someone just for you. Have patience and stop thinking negatively. Time will heal you.

In the meantime, you can sit and listen to the same tape over & over, knowing nothing will change the ending. Or you can go start your own tape with your own ending.

It's not easy sometimes but you gotta do it. It's been a year since my g/f and I broke up and I still obsess about it sometimes. So I started keeping a diary and make daily entries. Getting all the frustration, hate, yelling & screaming out. When I close it, I'm done for the day and try to occupy my mind with other things without going back and adding something else. (I use a freeware diary program called Efficient Diary)

One foot in front of the other, one day at a time.

Good luck!