I'd have thought that was rather obvious, given how often I talk about it.

[While the tone isn't out of place for Mettaton--he is known to be a little sassy, after all--he does feel regretful immediately after what he says. Asriel doesn't deserve his sarcasm, especially not in this situation.

Sighing, the robot sets his cards down and shakes his head.]

Look, I shouldn't have come here. I'm sorry, I need to go, before I ruin things. God, I'm so selfish.

[He moves to get up.]