Today is the first day I went to my girlfriend's house. She is living with her sister Mei, she is a nurse, and she often has to work night shifts. Whenever she is tired, Ms. Mei often falls asleep on the sofa. She also wore a very wide suit that exposed her big breasts in front of my eyes. I've always tried to control myself, but when my girlfriend has urgent work to leave, I can't stop myself anymore. I unconsciously approached her, my hand had been on her big breasts for an unknown time. When stroking these big breasts, Ms. Mei seemed to show no signs of waking up. So I became bolder and bolder. Bury your face in these big tits, suck them, rub your cock on them and Sister Mei still doesn't wake up! At this time, I was able to feel extremely relieved, proceeding to insert my cock into her wet pussy...