[I'll come to them he says, and while he is happy every time someone says that they will attend his concerts, hearing that Bucky fully intends to be there gives him a special sort of thrill. Unlike before he lets himself feel it, allowing a small indulgence in his feelings towards the other man.

If Bucky is going to be there from now on, Mettaton is going to have to step up his game.]

Oh yes I am! I'm something no one can ever truly define!

[It's cute to see Bucky speechless like this. It's nice to see him happy, to see him playful and messing with him. Steve had mentioned that Bucky was going through an adjustment process, and Mettaton had felt honored that he was a part of it. He especially feels that way now, knowing that this sort of casual affair was rare for him.]

You know, if you ever feel the performing itch, this stage of mine is free for anyone to use. It's first come, first serve though my events do get priority since I built it.

[He's shameless like that.]

You're also welcome to be a stage tech! I could always use more strong, capable hands to help set things up.

[He puts a flirtatious emphasis on "Strong" and "capable". Once again, he's shameless.]