Punny cards are always good for a smile. This one uses the seal from DB Eskimo Kisses, which is the Sneak Peek product for January-February 2011. Some other punny ideas for Valentine's Day using DoodleBats could be:
Bee Mine (using DB Funky Bug, DB Sweet Summer, DB Buggin')
I'm Love Sick over you (using DB Love Sick Doodles)
Be my Sweetie Pie (using DB Food Fun, DB Love Pastries)
If you like these ideas, check out DB Animal Valentines where there's a punny Valentine for every capital letter of the DoodleBat.