My girlfriend has a very beautiful best friend named Erisa. Because my girlfriend will go back to her hometown for three days to attend her grandfather's funeral, she asked Erisa to look after me, at least according to Erisa. Even though I know I shouldn't have any thoughts about my girlfriend's best friend, I can't take my eyes off her G-cup breasts! Knowing that I was staring at her breasts, Erisa not only didn't get angry but also said to me, "If you can control yourself today and tomorrow, I will let you have sex with me on the last day." I was surprised and happy at Erisa's invitation. In order to have sex with my girlfriend's beautiful best friend, I struggled to control myself for two days. By the third day, my sexual desire had completely exploded! No matter how many times I ejaculated, my penis remained as hard as ever!