Maybe it’s an ear? There’s a bump in front of the face that would match for the right. It’s a really pleasing detail the more I look at it.

No, the heart symbol (with that connotation) only comes about in the middle ages. Prior to this, the shape used in art generally referenced foliage.

I really hope so. I would have done this so many years ago.

That’s the kill spot. Heart, lungs, liver, het yer spear right up in there.

It definitely looks like a modern cartoon heart, but it may have been a depiction of a wound or something else symbolic.