I have a confession to make, I will never tell this to anyone, but it still needs to be told, I don't regret it by no means, and yes I have done it a few times since
My brother and I were on a trip to see some of our kin and to stay for 2 weeks before School starts back,my brother is 18 we are only 20 months apart in age so we were pretty close but not that close.
We were on our way, been driving for about 4 hours,after talking about everything on earth we finally got to the subject of sex, we talked about his girlfriend,my boyfriend and what all we've done.
I could see this conversation was getting my brother excited because of the way he talked not to mention the way his shorts rised up and made a tent, every once in a while he would grab it and try to make it lye down, he finally just covered it up with his hand, but then he started to stroke it.
I teased him about it and was just having some fun, I know he was embarrassed and it was mean what I was saying to him about it, I asked him if he had eve seen me naked, he said no, not since we were little.
I said you never seen my titie's, no he said, so I asked him if he would like to, he wouldn't answer me so I just opened my shirt and pulled my bra over my tit's to let him see, he didn't hesitate to reach over and squeeze my breast, I told him if he wasn't driving I would suck his dick for him,the dumbass pulled over to the shoulder of the road and said I'm not driving and pulled his dick out from the leg of his shorts and said ok suck it, so I took hold of his dick, jacking him and laid my head in his lap sucking his dick, it didn't take long he was cumming in my mouth, I sucked his dick dry,right up to the point that it went limp.

I said to him, ok now that your feeling better we got to get to the Hotel before mom calls, we get to the hotel and order pizza and waited for mom to call, after we ate I wanted to go take a shower, so I took my night clothes and went in and undressed, I got in the shower and my brother walks in butt ass naked and opens the shower door, I covered my boobs and crossed my legs but after talking and fussing with him I told him ok but you can shower with me but don't get no funny ideas and he got in the shower with me I'm not sure how it got started but it wasn't long before we were washing each other and kissing,his dick was rock hard again so I put my hand up on the shower walls and just slipped his dick right inside me,fucking me in the shower and rubbing my body, I felt so good, I didn't want it to ever end,when he got ready to cum I took his dick in my mouth again, his cum is really sweet,not bitter like the other's I've sucked, we had to shower again,then we laid in the bed, laughing and talking, both of us naked and enjoying it with each other.

He asked me if he could eat my pussy, I spread my legs and said there it is, and we were at it again, but only now it takes him a lot longer to cum,after the fourth time of fucking he rolled over and went to sleep,this was now our regular routine,most people that saw us thought we just got married, we would kiss and fondle each other all the time,now that we are back home we tell mom and dad that we have a double date so we can go somewhere and just fuck the way we want to, he say's I am his secret girlfriend and wants to marry me, our relationship is getting way to serious but I do love every minute of it, I wish I could marry him,we have a natural love for each other because we are brother and sister but we also have a special love for each other to.