Not all walkaways are created equal, some leave because of abuse, others because the R isn't working for them and yet others because they are neglected.
Don't treat W as if she were wayward, the majority of walkaways don't enter into new R for at least 18 months after S. And it is my view that once there is S, the walkaway considers themselves free to seek a new R and that the LBS can too. I suspect there is no A or EA at this stage that doesn't mean in due course there won't be a bf.
So as long as you have accepted the old R and M is finished and that new Davide is looking for a new R with W or otherwise. The old one is over.
I believe in being friendly, note that isn't being a friend! There is a difference. Don't slam the door, answer questions with BIFF techniques, no venom or anger. Display the new you, more in sorrow than anger. And know that for shift (not change, change is reversible) then it takes time lots of it. Perhaps years before W sees that.
In my view there is a sweet spot where the WAW considers if reconnection is possible, if that's rejected or appears to be then they shrug and move on.
This does not happen if there has been abuse (my own sitch), once out there is no going back. And waywardism is different too, the WW has to be atoning. And as an LBS never take back an abuser who physically abuses.
None of the previous paragraph appears to be your sitch, it is Classic DB as described in DR.
It is always the LBS who says done as you become a man only a fool would leave then you shift. Shift means you can develop until you know that the old R no longer fits you.
Be friendly neighbour and keep the path home.
The lighthouse and picnic strategy is great in the long haul for you.
My thoughts
V
Freedom is just another word for nothing left to loose. V 64, WAW