Hey girl, Welcome. You have an intersting story and interesting opportunities should you wish to try again. I would recommend posting in the "Piecing" forum here; there are several folks there who are struggling to regain trust and love following an affair or a breakup. Look up SDFoundGirl for one; she never divorced but it was touch and go last summer.
I have little advice since I am in the middle of the divorce process and it is ugly. I want to smack my stbx, not try to get back together.
I see positives for you. But the trust issue is a biggie - more important than love. You and he will both need IC and MC if you should try again.
One last point: why should he ask you out? This is 2007; ask him out if that is what your heart says to do. Lunch or something not threatening. No pressure.