I am right there with you in the same sad boat. While this is a delusion and she continues to care for the kids, then I'm continuing to support her. If the fantasy becomes reality or we separate or divorce or she detaches from the children, then it will have to change.
Gordie 40s W 40s M20+ kids 2016 BD W fantasy affair w OM1 I do everything wrong 2017 I start to DB W says TLTL files for D PA w OM2 2018 I do LRT W drops filing and OM2 situation slowly improving