You've got to read it to believe it! These true stories seem almost too good to be true, but we promise that we couldn't make these up. From love to loss and from survival to unbelieavable The most common type of sexual abuse in America is brother-sister incest. It's not at all unusual for siblings to have stories like this. I don't mean to play down the seriousness of your situation, but children do regularly participate in sex play at the ages you were. Whoever the child is around most often are generally the ones they have sexual play with.