Mettaton just fucking laughed, and you wondered if the pink blush had been on his cheeks beforehand. “Why, thank you, darling! I guess I can give you time if you want to make yourself even more pretty. In the meantime, I will be talking with Alphys.”
To your goddamn surprise and shock, Mettaton reached down and gingerly cradled your hand in his, bringing it up to his mouth and pressing a kiss to your skin. With his pupil still in the shape of a beating heart, he flashed his pearly whites at you one more time before ghosting down the hall to the main lab, leaving you stunned with your face burning.