My W proposed the "dating" thing too - but in her context it was to see if we can rekindle the relationship and see if we are still M compatible.
In my case I'm going along with it and can say it's been a pretty positive experience so far, I feel like we are growing closer and reconnecting but she's still not committing to the M.
During the last 2 weeks she has opened up more to me then she has in a long time - and has also opened up about the R (that's what kicked it off). With her finally being honest about that I felt we could move forward and at least see where it goes.
Time will tell where this will go, and in your heart you need to be open and ready for it.
Me: 40 W: 45 T: 13, M: 11 1 D: 9
Suspect A 6/15 ILBINILWY 8/15, and 3/16 EA/PA Discovered 3/16 EA admitted 3/16 W Moved out 4/16 W opens R talk and says A over 1/17