I think H has an inkling that D14 will move out when/if I get a new place and he's okay with that because he's delusional. Upstairs in his house there are 2 bedrooms, one massive and the other normal sized. His plan is S19 will move in with him and take the bigger room. D14 will move in with me but he will set up the other bedroom for her so she can stay with him overnight. S19 can drive so H will have less responsibility. He knows S19 will drive to my house many nights for dinner and then H will be free to go out.
What H doesn't realize is S19 doesn't want to live with him either. No one wants to live with him. They fear the day when the OW is introduced into the mix and until then he's never home. The kids want a stable, predictable home where they can count on being fed and clothed preferably one where there isn't a boyfriend or girlfriend in the picture.