I've thought a little about S, and I don't see the point in my case. Because she can't afford to establish her own residence, we will be living together until we decide to sell the house, or until she gets it in a D settlement. I'm not going to pay for a house and an apartment. So in that case, S to me just looks like full permission to do what she's already doing.
Also, I don't see where S ends, and I have a timeline. OM3 is S from his W for several years now I think, because there a millions on the line and nobody wants to lose. [hmmm... consider looking up OM3's W. ]
So I guess I just don't get S. You're in or you're out, I think. I've suggested to W that we not stay together for kids but maybe actively try to make R work for a year then re-evaluate whether we should D. But to passively S for a period to see if absence makes the heart grow fonder doesn't really appeal to me.
So, dating. I know W doesn't like it when I GAL and just tell her "I'm going out to dinner tonight with friends." Don't know if she still cares - I'll find out next Tuesday night. I know she figures that no sex with her must be driving me nuts by now, and she may figure I am already straying, especially since I know she has. I still don't really see S as a motivator.