I M19 have a twin sister F19 and we’ve always been very close to the point where we take showers together. She is a very sexual person and isn’t afraid to make sexual comments or even gestures. So I was taking a shower and she joined which isn’t unusual and starts making sexual jokes, then she drops a soap bar and say “oopsies I hope someone doesn’t take advantage of me” so when she bent down I stuck a finger in her pussy just a quick in and out. She was definitely surprised and didn’t know what to do so she just grabbed my cock and it gave me an instant hard on which was embarrassing but she kept holding it and started jerkin me off. She then got on her knees and started blowing me but that didn’t last long and we got out the shower. Later that night she comes in my room and cuddles with me with is normal but she slipped her hand in my pants and jerked me, I put her on her back and ate her out for a little then she rode my cock till I creampied her. She is on birth control and I’ve been thinking about her pussy a lot lately wanting to do it again.