Have you seen the Seeds of Love?
They can be found inside puffy seedpods like this one.
This plant is called Love in a Puff, Heartseed, Heart Pea or scientifically, Cardiospermum Halicacabum.
It's climbing stems carry little white flowers.
Love in a Puff is an invasive weed.
Nevertheless, I still grow them for the little white hearts they produce.
It is restrained in a pot to prevent from outrageous growth.
Have you seen any other seed that comes with a heart?