Yup, and to Steve's point "The sodas were just the wake-up call.", it was more than a wake up call. As the paper explained, to stop sharing food with someone fo

Yup, and to Steve's point "The sodas were just the wake-up call.", it was more than a wake up call. As the paper explained, to stop sharing food with someone forces them to re-evaluate their relationship to you. They can't help it, it's thousands of years of behavioral training that kicks in and says, "This person no longer likes/trusts me, what should I do now?"