I said “Have you ever been out with a girl?” and he replied “No”, I looked at him he wasn’t a grotesque looking lad but he wasn’t God’s ...ift either, “Come closer to me” I said, as he did I put my arm around his shoulders, “Kiss me” I ordered, as he moved forward he clumsily kissed my lips. With my arm I moved him even closer and we kissed again.I slipped my tongue into his mouth and he pulled away, “That’s proper kissing” I told him, as I pulled him closer again we resumed kissing, his tongue. ”“I think he was cheating on me, or punishing me for something.”“I’m sorry, Rachel.” It was then that I realized my hands were still on her stomach and on her breast. “Is there anything I can do…?”“I’m so sorry, I know this has got to be weird for you, I’m just so alone.”“You’ll never be alone, Rachel.” I pulled her in tight to my body and began running my hands up and down her tight stomach, and up to her breasts. When I got there, I took one in each hand and gave them a firm but gentle. I slid my hands into my shorts and stroked my cock through my boxer briefs. She kept taking pic after pic. I then pulled my shorts all the way off. Now I'm in just my boxer briefs. "oh wow hhhh" my sister whispered. I scooted to the edge of the couch and layed the rest of the way back. I watched my sisters face the whole time wanting to see her reaction. Her eyes still glassy, and with her eyes not widening, opened her mouth and just stared at my bulge. "you look so hot like that hhhh" she said. ”We moved outside the hall after adjusting our clothes properly. My erectness in the pants was still clearly visible so I moved towards washroom and directed her to do the same. The men and ladies washrooms gates were opposite to each other. So I asked her to wait there and check if the washroom was empty. I checked and found no one was there as the theater was not crowded at all. I came to the door pulled the door and pulled her inside.We kissed passionately continuously and while kissing.