That's so cute. There's something about nature where the mate eats the other (like female mantis'), that's also so ravenously romantic. It's poetic I guess.

And it's done with or without tongue, it doesn't matter to him. Just lips is a thank you. Full tongue can mean more than one thing, say an invitation to something, much more, or just an extreme compassionate "thank you".

that mochi does look tasty mm

What used to be fringe and anti-social behavior regulated by social interaction when we were coming up seems like ancient history even if just decades removed. Facing discomfort builds resilience. Learning to accept differences creates toleration. I do worry about today’s “all or nothing” mentality.