Scenario 1:you were at grillbys with your friend papyrus when he looked at you opening his mouth slightly but he closed it and turned away it seemed like he was hiding something you just couldn't figure out what.

Scenario 2:you had liked us papyrus for a long time you admired how he was the type who took it easy and you were going to tell him how you felt but whenever you saw him at grillbys with another girl you soon denied your feelings and started to run away when he noticed you and thought you had token it the wrong way and started to chase after you

(Also requested by Wolfkami_Arethos )