All my cards are scripted to 'say' a message in Chat when the recipient Rezzes or Touches the card.
The Customisable card menus will help you to 'record' your own message (e.g. "To Jane, the best wife in the world - Happy Valentine's Day from John x"
and rename the card (e.g. "Jane's Valentine Card". They're easy to use, and you can get a Demo Card (non-transferrable) to practice on first.
Amongst the range are larger cards, cards that don't mention "love" (and cards that do, of course!) and ones suitable for giving to a friend.
Valentino's Customizable or Personalized Cards, Gifts and Flowers, Achado
Happy Valentine's!