Silicone molds have become popular vessels for baking. They store easily, allow for painless food removal, are dishwasher safe, and prevent the burned-on residue that shows up so frequently on metal pans. Since the heart is an odd shape, using a silicone mold means that your cake will come out with nicer edges.
The molds themselves are festive, too: they're pink.
They also come in different sizes, so if you want to bake something really fancy, you can try a tiered red-velvet or a multilayer chocolate cake.
The Fauchon Pink Silicon Heart Baking Molds are available from Sur la Table . You can get them individually for between $15 and $20 dollars or the set of different sizes for $40.