Totally respect the way you feel. You've been 'burnt' and are approaching it carefully as he likely will which is the best way.
I was best friends with my DBF before we became a couple. He chased me and all along I warned him I never want to lose him as a best friend and worst of all hurt him. He's been through hell.
Our problems have happened because he promised what he hoped rather than what was likely and dealing with that has been hard.
But I still love him so we're plodding through. He's not actually divorced yet (wife left June 09) and the next couple months are the last battle stages.
I saw your name posted but I'm never sure if people want them posted

I'm Lou.