You and Sans were arguing over puns or being playful and funny while Papyrus watched starting to get worried since it was getting heated.

Sans was getting closer to you now both of you were almost chest to chest together..

“What did I tell you about using my beloved ketchup!” Sans yelled in a playful tone but also alittle upset that you used his ketchup..

You stepped closer to Sans and rolled your eyes yelling back at him giving him a valid reason why you used his ketchup in the first place now you and Sans were pressed close together chest to chest.

Or rib-cage to rib-cage..🦴

And Sans let a playful grin fall on his face as he grabbed your lower back and was leaning close to you and close to press his teeth against your lips as a kiss.

“Heh.~” he laughed out weakly getting closer.