The time masterbated together (true story)

I was 17 and my cousin was 23 at the time. Me and her were close and talked often. However we live a good distance from each other and so we only saw each other every 3 months or so. One time we were visiting and both our parents were going to a wedding. We decided to stay and I would spend the night over and watch a movie. Her sisters were in Ireland at the time so it was just me and her. It was about 7 PM and we watched a movie together on the couch. I always had a little crush on my cousin. She was good looking and had a nice body. Half way through the movie she said that she was gonna change and come back down. I nodded and continued to watch the movie. About 5 minutes past and then she came back downstairs wearing sweatpants and a tanktop. My cousin does not show a lot of her body and my eyes instantly locked on. She came and sat next to me and began to watch the movie again. Meanwhile I began to stare at her body. Her nice breasts were impossible to miss. Not to big and not too small. It was August and it was getting hot in the house. She turned up the A/C and then came back to sit down. 10 minutes passed and she let out a sigh. She stood up off the couch and took off her tank top. My jaw dropped harder than the atomic bomb in Hiroshima. She sat back down and said "Its too hot". Her breasts were beautiful. I have never seen a nude girl so close to me until now. I began to talk, choking on my own words "You do know I'm right here right?" She nodded and looked at me "I know, you can do the same if you want. As long as you keep it secret." I was amazed and shocked. I felt my cock starting to harden. She turned back to watching the movie and I began to tske my shirt off. I am not the best built person but I was proud of my build. I put my shirt over the arm rest and sat back down. I kept staring at my cousin's breasts and then she looked at me and caught me. "I'm sorry" I said caught by surprise. "Don't worry about it. Ill show you my lower part if you keep it secret." I promised her hat nobody will ever know and so she took off her pants and panties. I stood up and began to unzip my shorts and took them off. My cock pushed through the bottom of my underwear and made its presence known. My cousin's eyes locked on to it. "Wow" she said with her eyes wide. I took off my underwear and now we both looked at each other completely naked. She was beautiful and I could not take my eyes off her. She stood up and mde her way upstairs and told me to follow her. No way this is happening I thought. I went into her room and she sat on her bed with her hand rubbing her clit. I went over and sat next to her and watched. I began to stroke myself and placed my hand on her thigh slowly rubbing up and down. She didnt say anything so i brought my up to her breasts. She laid back and I position my self next to her. I kept stroking while staring at her amazing body. She began to finger herself when I decided I would just say it. "Can I do it?" I asked in the most nervous voice. "Only with you hand. You cant use your penis" She replied. She took her hand out snd guided my hand in. I began to go slowly in and out meanwhile stroking myself. I continued to finger her faster and stopped stroking myself. I rubbed my hand over her stomach with my other hand as I fingered her. She moaned every now and then until I felt a rush of warm fluid. She had just came on my finger. I began stroking again and I felt the rush coming. I told her I was gonna nut on her and she said do it. I tried to hold it back but then i nutted the biggest load onto her stomach. Amazed I looked over at her and saw her laugh. We laid down next to each other while i rubbed her clit for a little bit until we decided its enough. This happened 2 years ago and every now and then we would see each other and remember that hit August night.