Papyrus was on his knees crying as he placed one arm around his brother, Sans’s chest, and the other holding Sans’s arm as Sans had those white cube particles over his eye sockets

Sans: just give up... I did.

Papyrus: DONT GIVE UP HOPE SANS WE'RE ALMOST FREE!! he yelled desperately

Sans: you'll never see him again. he was referring to Papyrus, not realizing it was Papyrus that was right in front of him

Papyrus: BROTHER, IM HERE!!