As Derek started to slowly thrust as he moaned and kissed her neck Kristina reached up with both hands and gripped his shoulders, her nails digging in slightly. She moaned along with him and as he built up a rhythm her hips began to roll into his as they started to move in unison on the couch. Being essentially curled up there on the sofa she felt so small under her tall friend as her tight pussy gripped onto his cock as her had sex with her.