I don't know... the guy might have thought that it was not a big deal.

Example : there have been female & male celebrities who have posted photos of themselves kissing their kids on the lips (light peck, not a French kiss).

Some people saw the photos and were grossed out- "Don't kiss your kids on the lips!"

The celebrities answered back: "There is nothing wrong with kissing your kids on the lips! It's just an innocent kiss!"

A face to face meeting with the guy might have been better so you could have seen his reaction. If he felt bad about the situation. Maybe it was a mistake that he regrets.