In romantic fiction and real life, this verification acts as a high-speed filter. It weeds out the faint of heart.

A protagonist's ability to bond with a difficult animal signals her capacity for deep human love. Notable Book & Movie Examples

The breakup was quiet. He said he felt like he was competing with a thousand-pound ghost. I said, “He’s not a ghost, he’s standing right there,” and pointed to Jasper, who was currently scratching his face on a fence post. Leo didn’t laugh. That’s how I knew it was over.