That's my kind of Valentine and when there are tween boys on your list of people to make cards for...it's a great combination. So I broke out Background Basics: Farm and Barn to get a the wooden wall for the "graffiti" heart.
Then I used a paintbrush and glue to paint the heart on the "wall" embossed it and added and arrow to get the message across.
Thanks for looking and hope to hear from you.
Stamps: PTI (Background Basics: Farm and Barn, Tiny Treats: Valentine),
Paper: PTI (Fine Linen)
Die: MFT (Banners)
Ink: Distress, Versamark, Brilliance