Whether for love or friendship, I enjoy giving Valentine's greetings. In a used book store I came across a little book of Valentine sentiments called Yours 'till the Ice Cracks: A Book of Valentines by Laura Geringer, illustrated by Andrea Baruffi and published in 1992 by HarperCollins. A few of my favorites:
Be my valentine. Yours 'til the desert disappears.
Be my valentine. Yours 'til the moon melts.
Be my valentine. Yours 'til the sky falls.
What can you come up with? Yours 'til . . .