I planned a trip to a hot spring to coincide with a memorial service at my girlfriend's house, and her sister came along too... I thought I would have sex with her again, but her sister started seducing me and my penis twitched... "Touching my penis with my hand isn't cheating." My sister is the complete opposite of my girlfriend, her older sister, and she loves sex ♪ She touches me with her hand and makes me cum whenever she can. Even though my girlfriend is right next to me, I have sweaty sex with my sister. Seeing her fair, white skin flush with excitement makes me get an erection that won't stop...