This year you can pack your Valentine's Day full of Transformers, Transformers Movie themed Valentines Day cards now seem to be available at retail stores.
The Transformers Valentines Day set has been spotted at "Rite Aid".

There are 36 Valentines available: 4 sheets of 4 Autobot Valentines (Prime, Bumblebee, Ratchet, and Jazz) and 5 sheets of 4 Decepticon Valentines (Barricade,Megatron,Blackout, and Frenzy). (Although the box itself claims to only contain 34 Valentines)
So if you are the need of Transformers Themed Valentines this year, head on out and nab them!