One day when sans and papyrus go to hang out with Undyne and Alphys, papyrus meets a new robot created by alphys named mettaton. Papyrus and mettaton fall in love, but are forbidden to be together by both Alphys and sans. They must keep the relationship a secret if they want to be together. But will they be able to keep the secret forever and will they be able to be together? (This is my second papyton fanfic. You can also read my story "thinking of you" if you enjoy papyton stories. This story has nothing to do with the plot of "thinking of you". )