My brother is 11 yrs old and I am 16 yr old.. With difference of 5 years..

We shared same bed as he used to cry when alone..

Few days back I felt something on my hand and to my shock it was my younger brothers dick…

I shocked but slept after that…

The next day he started rubbing his dick on my back.. and I got to know what was he trying to do..

Then I started to protect myself at night by covering myself wholly with blanket….

Finally it stopped at night… but one day he again tried it and that day I was horny so I took his hand and rubbed my pussy hard…

Unfortunately he thought its cool….

Now when I sleep on my chest towards bed and my butt facing he would come and rub my pussy with his hands and also put his dick in my butt…

I couldn’t say anything…. I went into shock but also I enjoyed it

Now I regret it… What to do?