The key to DBing is to 1) prepare yourself no matter what the future holds 2) remove all pursuit and pressure from the WAS to try to coax them to get curious about why that went away and come looking 3) to not remind them of what they have stated they want or how they feel
1 is what GAL, detachment, and 180s are all about. 2 is as I described. But 3 is a really big key. This is why saying "I love you" is something LBSs shouldn't say. Because it reminds the WAS that they DON'T love you. At least that is not how they feel at the moment. When you take away pursuit and pressure it allows the WAS room to breathe and to even potentially forget that they've already decreed that they are leaving. .
Quoted for truth and reinforcement of what I need to do.