Papyrus felt his cheeks burn up as Jack buried his face into papyrus's neck. "J-Jack what are you doing?" Papyrus whimpered as he suddenly felt something wet slide up his neck. "J-JACK?" he gasped. He got no response and felt Jack bite, lick, and suck on his neck, leaving hickeys all over his neck. It felt so weird and he whanted to close his eyes and take a minute to relax. The next thing papyrus knew, he and Jack were naked. "J-Jack I dont...I'm nervous...I've never done this...." he shuddered out as jack spread his legs. "Don't worry, I'll be gentle~" Jack licks his lips. Papyrus shuddered and gasped once jack stuck his fingers into his mouth. "Suck" jack commanded. Papyrus nervously obayed and sucked Jack's fingers. He couldn't help but get very aroused by this but also very confused. He never felt arousal before in his life. It felt like an eternity until jack removed his fingers from papyrus's mouth.

~time skip to the next day (because I am evil and I wont continue with the smut)~

Papyrus groaned. His head hurt and his entire lower body was killing him. He propped himself up a little bit and saw himself in the mirror from across the room. He gasped in horror. He had hickeys all over his neck and legs and he had scratch Marks on his arms. He was sticky and sweaty, and his memory was a blur. He got up and took a shower quietly, burying himself in his thoughts.
Jack woke up to hearing the shower being turnd on. He had a strong feeling that papyrus was in there and shrugged it off. Then he felt scratch marks sting his back and a big bite mark in between his neck and shoulder. He remembered what happened and sighed. He had never made love to another male(or skeleton) before. It felt interesting. But he didn't complain. He enjoyed last night.
He just wondered how papyrus felt.
For the rest of the day the two were silent and kept to themselves. Papyrus really whanted to talk to jack about what happened but didn't know how to do it. Meanwhile jack thought that papyrus was upset at him and decided to give him some space. But it was really hard for them. They enjoyed each other's company.
The day whent by fast and soon it was time for dinner.
"So....um...jack do you...uh" papyrus couldn't get his words out.
"Yes?" Jack looked up at papyrus
"Do you...like me? As in...like LIKE me?" Papyrus asked, his cheeks turning pink
"O-OH uhm...I" Jack didn't know what to say. But everything in his body and mind told him to simply say
"....ok?..I-I MEAN YES yes I do"
Papyrus started laughing sweetly. He thought jack was adorable
"Haha, I like you too! Maybe we can...give it a shot? Maybe this relationship could work out! I know we just met but I would really like to try" papyrus smiled sweetly at jack
"So would I. How about we take a stroll through the graveyard and have a picnic on the hill? Its gonna be a full moon tonight and it'll be so nice and peaceful" Jack suggested
Papyrus nodded excitedly
"I'd love that"