The whole deal w/ GF would have been just too weird for me.
I would NOT talk to your W's former room mate. My W would view it as snooping. I think if my W talked with the firends I've been hanging out with while we have been sep I would probably consider it snooping too; but there is nothing on my side to hide.
Reuben, you are doing good. I'll say a prayer for you for continued success.
Unfortunately, my sitch cannot be saved by me. I've detached and moved on in everyway except for dating. I still love W and her sons but it is definitely different. Forgivness is complete, trust must be earned.
Keep doing what you are doing. I wouldn't be surprised if your W withdraws some after digesting what she heard. It would probably be temporary. Do not despair if that happens.