I don't think there's ever a perfect definition of love, simply because a person's definition of it changes along with time. Personally now, I would define it as, a feeling of closeness with profound care for another.
But that's just me.
In this song, entitled, Perhaps Love, love is defined as how others briefly perceive it. Some definitions are vague, some strong and direct; one of which could be your definition of love too. The beauty of the song lies in the line, "my memories of love, will be of you..."
This John Denver classic is an all-time favorite of many, including me, of course. This one I made was a duet between Jan Smit and Met Paul De Leeuw. I was mystified to read Jan Smit's name written as "John Smit" towards the end of the vid. Sorry about that typo. I should be more careful next time.
Enjoy the vid! =)