Falling in love makes your brain happy.
Falling out of love makes your brain wonder what it was happy about.
"What was I thinking?" the brain asks itself.
"My bad," the heart replies.
"No, it is I who am to blame," the genitals joins in.
"That's very kind, but I am in charge," brain responds, responsibly.
"But not in matters of the me," heart cleverly comes up with.
"That's true, you are the CRO, chief romantic officer," says brain.
"So it's agreed then, we blame heart!" offers genitals.
"Fair enough. I love you guys. I will buy everyone drinks to make up for it!" says heart.
"Hey!" comes a new voice.