i think they probably could...not sure about madly in love tho since they usually has a sexual conotation to it...not sure if old people are into that but who knows... A movie about that would be great and actually I bet there are movies out there where old people fall in love, I have seen stuff like that on TV anyhow...I think it would be sweet if two old people found each other and had someone to spend the rest of their years together...life is much more fulfilling to most people when you have a companion ...and at 80 years old most people do not have many family members left...sigh...