you were at gelatin's stakehouse with eraser, eating stake and talking about pen, his crush.. but you didn't know that yet. As eraser continues to talk about pen, you were slowly starting to think he maybe did have a crush on pen but instead of asking a question, you called out to gelatin for more stake

Gelatin approaches them

Gelatin: "of course! Since you asked so nicely!"

He went to the kitchen and eraser smiles

Eraser: "y'know, gelatin is a great cook.. these stakes are fire!"

After that, he continued to talk about the boy he liked, pen... Eraser definitely had a big fat crush on him.