Memory.

"Poets often describe love as an emotion that we can't control, one that overwhelms logic and common sense. Thats what it's like for me. I didn't plan on falling in love with you, and I doubt that you planned on falling in love with me. But once we met, it was clear that neither of us could control what was happening to us. We fell in love, despite our differences, and once we did, something rare and beautiful was created. For me love like that has happened only once, and thats why every minute we spent together has been seared in my memory. I'll never forget a single moment of it."

~The Notebook