Yeeeeeeeeh one of my otps -w-

Scenario one)
Mettaton came to hang out with the skelebros and they did for a while but then Sans went to visit a friend so Mettaton and Papyrus were all alone...just the two of them ͡° ͜ʖ ͡°

Scenario two)
Mettaton, sans, papyrus, and toriel were all playing truth and dare but then sans dared mettaton and papyrus to play 7 minutes in heaven.

Scenario three)
Make your own.