Re-posting because I edited/added some things. :D
Kurt pressed his hands hard into the soft flesh beneath his fingertips, kneading and groaning when his fingers dug into the firm muscle underneath. Grabbing as much skin as he could, Kurt squeezed and fitted the peaked nipples between his thumbs and palm, tugging on them hard.
“Fuck fuck,” Dave cried out somewhere above Kurt’s head, his back arching and chest pushing into Kurt’s hands. Kurt tightened his grip, pulling harder on the pebbled nubs, and grinned at the strangled moan it earned him. He relaxed his hands and smoothed them over the tender, reddened skin on Dave’s chest before leaning in and following the path of his fingers over one abused nipple.
Kurt latched his mouth around the puffy skin covering Dave’s pec and bit down, sucking the already swollen nipple into his mouth while his hands went back to work, his left twisting and teasing the other side of Dave’s chest, his right dropping lower to take care of another matter that was rutting against his stomach.