It'd been a few weeks since Swapfell's heat, and Fell had been acting more grumpy than usual, so it was fairly obvious to Swap that his heat was probably coming soon, if hadn't already. Swap had been continuously teasing him about it for the past week and a half, and it was getting on Fell's nerves. One day, Swap woke up, and looked over at Fell. He chuckled slightly and poked him a bit, commenting "you ok Fell? you look like a hot mess" but all he got in response was Fell telling him to fuck off, which made Swap chuckle more, pulling the covers off him. Fell growled and covered himself, telling Swap again to fuck off, which he completely ignored. Swap closed the door, picking him up and setting the grumpy skeleton on his lap with a smug chuckle. He checked his temperature with the back of his hand, sighing slightly at how warm he felt "jeez Fell..." he held him tighter and started kissing his neck a bit, which only seemed to make his heat worse. Swap smiled a little, nuzzling him as he took his hoodie off, holding onto Fell's hips gently and nipping at his neck teasingly as Fell started to whimper a bit from feeling too warm. Swap sighed simpathetically and took his shirt off, helping Fell out of his shorts. He turned Fell to face him and started kissing up and down his ribcage, which Fell positively melted at. Swap carefully nipped one of his ribs while taking off his own shorts and carefully gripping Fell's hips. He started rubbing them in circles with his thumbs while licking up his chest. Fell let out a small needy whimper, shifting around and going closer to Swap as best he could. Swap chuckled a bit before starting to carefully push his member into Fell. Fell seemed to melt even more at this, arching his back and digging his nails (?) into Swap's shoulders. Swap grumbled and gently bit his shoulder, running his hands up and down Fell's sides before starting to thrust in and out of him gently. Fell moaned and started drooling a little, chewing on his lip (?) and squirming around happily. Swap smiled a bit at the fact Fell seemed to be enjoying himself as he kept going gently, cupping his face with his hand and caressing it before pulling him into a kiss, wrapping his arms around his shoulders as he felt Fell start bouncing himself slightly. Swap rubbed Fell's cheek with one hand, rubbing his inner thigh with the other before pulling away from the kiss slowly, nuzzling into Fell's chest and gripping him tightly as he felt him start to tremble, showing he was close. He licked up Fell's chest again, letting him cum before cumming too himself. He kissed Fell again before pulling out and laying down with Fell on his chest, rubbing circles into his back. "better..?" Swap asked "I hate you" was all he got in response before the two slowly dozed off