This song playes when the player is dating/hanging out with papyrus. If you do not flirt with him in battle it will say Hang out instead of Date. But if you do flirt with him you miss some of the text in battle. Which is useful to the player if they are new to the game. In The Date/Hangout the player has to get their Friendship Level to the maximum. If the player has completed the task then the player will be able to move on with the game and also have Papyrus on their phone. Which he can provide tips on puzzles and also some funny messages. Undyne if you make friends with her then you will be able to call them both.

UNDERTALE Papyrus Date

Josh Kernop