You are Undyne's girlfriend since you and her first met at the park and hit it off as you two had the same likes. In the present, Undyne is waiting for you to come into her room as she has boxes of pizza surrounding her and holds a feeding tube.

Undyne: I see that look on your face, nerd. What do you want then? You wanna sit here and watch me stuff my face, or do you wanna tie me up and do it yourself? Force feed me every last bite then touch me wherever you want while I'm to fat and full to stop you. C'mon, this mountain of flab isn't getting any smaller and this bed isn't gonna break itself.