Is it considered sexual abuse if you were both children?

I’ve only opened up to one person which was a past therapist who brushed it off as normal childhood exploration but it didn’t feel like that.

We were 3 years apart and it occurred between the ages of 7-10. He would force me to grind on him in a certain way, would forcefully play with my privates and would expose me to pornography. Then around 9 he switched to forcing me to play out acts on other kids. I felt so much shame, when parents in the neighborhood found out I was blamed and labeled dangerous and a slut even though I never wanted any of it to happen. I suppose I was curious too but I still remember the fear and discomfort I felt. We moved when I was 11 but I carried a sense of shame and guilt with me.

Is this really normal childhood behavior?