Yankee, I do promise to go back and read through your sitch, but I wanted to offer my own support, regardless of that great stuff I see posted by others.
Do you want to be in an open M?
If so, definitely go and find yourself a FWB...
Please understand that while a WAS might have an OP, if they hiding the OP, then they DO NOT likely feel that it is OK. Otherwise the OP would be in the open.
So if you decide to date, understand that it is quite possible your H will not find that acceptable and there will likely be consequences that will need to be addressed.
