Panel 1: As Elly puts laundry into a dresser drawer, John comes up to her and, having had time to think about the issue, comments on the fact that Anne and Steve's problems seem to be really bothering her. Her response is a gloomy "Uh-huh."
Panel 2: He asks if it would help matters if he told her that he loved her. Since this is the shmaltzy end sequence of a sitcom that contradicts what we know about the characters, she says that it would.
Panel 3: When she hugs him and says that she guesses that should do the same, he says "As often as possible."
Panel 4: Mike and Liz obediently fulfill their obligations by looking on and being repulsed by the very idea of their parents as romantic figures. He does so by getting all barfy and saying "Gross!" while she says that she thought that after a while, parents didn't need to do that.
Summary: As I said, this is the sappy, sentimental ending to a rank-out comedy that contradicts all of the insults and anger we see before it. We leave things here for a while so that I can cover the lead-up to an unpalatable atrocity: three more years of Mike making an ugly fool of himself around Martha.