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The process of dunking ones testicles into ink or paint, then proceeding to receive falatio from a partner, leaving loveheart shaped mark on falatio givers chin.

This can be done upside down and leave the loveheart shap mark on the falatio givers head.
Jill: Have you seen kims new tatoo on her chin?

Jane: That's not a tattoo.... it's a love stamp.

Jill: oh my !
by Furrynutzz December 29, 2009
A small, groomed patch of facial hair directly below the lower lip, typically square. Also: soulpatch.
Man, I didn't think it was possible to have a scraggly lovestamp, but he does.
by Amy January 13, 2005