PS: regarding the dating thing above, be mindful my W is dating and has been seeing people for well over 7 months now. If she does it why couldn't I do it?
Are you standing for your M or not? If you are then don't date. It is not at all fair to those that you're dating if you're still holding a candle for your W. The world doesn't revolve around what you want like you seem to think (which may be a reason why your M is on the rocks).