In preparation for Valentine's day, we've just added a butterfly animation that looks like this:
To put your own beloved in the picture, just click here (if you think you recognize the butterfly, that's because it comes from the Big Buck Bunny movie - thanks to the Blender Foundation for releasing their characters into the wild under a friendly license!).
And don't forget, there's plenty of other equally romantic designs lying around from Valentine's past: Heart lockets, heart showers, candles, wine bottles, ... we're doing our best for you on the 14th!