My sister and brother-in-law are both teaching in the university, and when I took the college entrance exam in high school, my dad let me take my sister’s college as well for the convenience of taking care of me. I have been a good girl since school and never dared to disobey my sister and me. One night, I felt thirsty, I got up to drink some water downstairs, suddenly heard a sound in my sister and brother-in-law’s room, there was a faint light inside, I hazily looked over: Oh my God, saw my sister, riding on my brother-in-law’s body, hair is very messy, there is a black thing below, scared me, Momo, that is the man’s… …? I looked very surprised, usually sister and brother-in-law very gentle, especially my sister, is a curmudgeon a person, how can? I hurried back to my house to lie down, the heart blah blah blah. I thought, my sister so civilized a person, how would that? In my heart, men and women should be like this: women below, men on top, cover the quilt before that ……, also surprised me: I actually dreamed, or with my brother-in-law that, and I was on top of my brother-in-law …… sweat, I woke up I woke up, a touch, the following surprisingly wet ……, I do not know what happened to me? Am I a bad girl? After I see my brother-in-law always feel strange, and I now sleep at night, always insomnia, always feel something itchy in the heart? I wonder if brothers and sisters have such a feeling, how can I overcome it?