So….

What happened to these two? I know they went back home and eventually Dennis goes back with her for a couple of episodes. I know this was Glenns way of doing other shows while not completely disappearing from the tv series.

But when Dennis randomly returns at the end of one of the episodes, its never explained or mentioned ever again. He just comes back. Knowng Dennis he probably just left her one night or even worse, faked his death (again). Or maybe she found he wasnt a good fit for a dad and kicked him out. There are so many possibilities and I'm not sure we'll ever get an answer

What do you think happened?