Seren is really hot for her older sister’s boyfriend. She’s had this desire for a whole 12 months, but has never known quite what to do about it. She has fantasised a lot in her dreams about a sexual tryst with him, but has never acted on her desires. Apart from respecting her sister’s feelings till now, she hasn’t had a chance really to get him alone either.
Returning from University classes one mid-afternoon, Seren finds Dmitri alone watching TV in the Sister’s shared apartment. Seren asks where her older sister is. Dmitri says she has just left for job interview in the city, and that he is waiting for her to return in a couple hours, prior to heading out on a dinner date. Seren senses her chance for tryst has arrived - but she realises she cannot waste this one shot at landing Dmitri’s sexual attention. She has to take command and surprise him. Anthropologically speaking… she has to mark him as her mate, in preference to her sister. Seren knows that means… natural mating.
Dmitri is completely oblivious to the thoughts flashing through Seren’s mind in front of him. He wonders why she seems to have spaced out mid-sentence. Seren’s mind is made up. She goes for it.
Dropping to her knees in front of him, Seren reaches to Dmitri jeans and without a word proceeds to unbutton them from his waist. Stunned, Dmitri sits reactionless. Unzipped now, Seren pulls his jeans and boxer shorts down mid-thigh and her hands and mouth swoop onto his limp cock. Working his balls and shaft in her one hand, her mouth working the head of his cock energetically, Seren pulls away the jeans and boxers down to his feet. Dmitri is soon erect in her mouth, sliding deeply into her throat. His cock is coated with Seren’s saliva. Dmitri is so immersed in the surprising oral attack that he fails to notice that Seren has removed her sports-skirt and unbuttoned her blouse.
Standing her legs upright, Seren keeps bent over Dmitri’s cock working it mercilessly in her mouth and hand. He has his eyes closed in pleasured arousal, so the drop of Seren’s panties to her ankles and her deft step from them goes undetected. Spitting into her free hand, Seren wets her pussy lips. It was barely needed - she is so wet already from her expectations. With conviction, Seren swings her leg over his crotch and plants his hard cock into her pussy as quickly as she could manage it. Dmitri is taken by surprise by the coupling. Settling onto his lap, his cock buried deep within her, Seren settles into the cowgirl position to take command of the sexual mechanics.
Thrusting her hips up and down in long deliberate strokes on his cock, Seren is relentlessly intent on driving Dmitri to orgasm inside her. Her insemination will give her the best shot at claiming her mate from her sister. Dmitri is conflicted between the ecstasy of the frantic penetration gifted by sexy Selena, and his long commitment to her sister. Working her hips as hard she could, Seren took the choice from Dmitri, milking his throbbing cock of all the cum he had. Seren was now full of his hot seed. She was panting madly from her frantic exertion.
Pulling his hard and hyper-sensitive cock from her pussy, Dmitri took a few post orgasm moments to survey the sweaty beauty perched on top of him. “Where had this come from?” he thought to himself. Seren was gathering her own thoughts as well. She was sure this tryst tipped the balance in her favour for Dmitri’s future attentions. Another thought occurred to her as well… “When do I tell him I’m not on the pill” she mused.