The blonde bit her lip as Derek hastened his strokes as he fucked her on the sofa. She was so horny. That was strange for her, but it had been slowly building ever since she had put the underwear on that morning. The feeling had crept up on her so slowly that she was just starting to fall for her own lust when she fell under Derek's spell in the bar. Her friend, one of her best friends that she was now fucking. It all would have seemed strange and suspicious if she could think of anything but the climax that she was approaching, the second of the evening at that.<br/><br/>Kristina hadn't had many sexual partners, and Derek was definitely the largest that she had ever had. His cock stretched her tight pussy so much but being as horny as she was the pain only got mixed with the pleasure. The statement that Derek was going to cum inside her would also have disturbed Kristina on any other day. Nobody had ever came inside anywhere but her mouth (and even that she wasn't fond of). But today wasn't like any other day by a long shot. It was the first day of her underColor testing program.<br/><br/>Kristan was rubbing her clit furiously by the time Derek uttered the half-sentence that he was going to cum. His final thrust and the sudden warmth that filled her pussy was what set her climax off. The blonde's back arched, pushing her hips forward against Derek's cock. That first jolt of her hips was followed by more as her eyes rolled back in her head as the climax ripped through her body. As her hips moved, Katrina's pussy gripped Derek's shaft tight like her body wanted to milk that thick shaft of his dry.<br/><br/>When the climax finally wore down, she slumped back onto the sofa panting softly, her pussy still massaging Derek's cock in her pussy.