Bucky always moves with intent, not a stray motion to him that indicates anything less than watchfulness. While this sort of behavior is more than likely related to whatever mysterious past the man has, Mettaton enjoys the attention. It's like a personal spotlight always fixed on him, one he relishes in because there's such a cute face attached to it.

He says this rescue was nothing and Mettaton wants to gently chide him for it. It means a lot more to him than Bucky will ever know, knowing that someone was thinking of him enough to be worried when everything went to hell. He doesn't have an absence of people caring, but to physically see someone here, to have them help him, is gratifying.

Bucky speaks, first a reasonable request, and then... oh. Their foreheads are pressed together like before and he feels touched, both physically and emotionally, over how vulnerable this human allows himself to be with him. In the coming days he'll feel exactly like Bucky, not wanting to be alone and terrified of the events that will occur... but for now, he is happy to be Bucky's anchor for a little while.

"Well, one good turn deserves another you know. What with the mirrors running about, I'd say there is safety in numbers. So I shall graciously keep you company, so long as you do the same for me."

His tone is light and gentle with just a touch of his usual pomp and circumstance.