A older couple are driving down the highway when another car passed them.
The woman notices the occupants of the other car are young and obviously in love. The girl is sitting very close to her boyfriend as they cruise down the highway.
This causes the woman to think back to when she and her husband were young and in love, and wondering where the show of affection had disappeared to over the years.
Finally she says to her husband, "Remember when we used to be like that young couple? Where did the love go, honey?" He quietly replied, "I haven't moved...."