Sexxx..

So when me and my step sister were younger (her 7 and me 9) we used to have "sex". It wasn't actual sex, but we would make out with each other and do it like in the movies, and we would like hump each other and we orgasmed and stuff, is that insest?? Or like is it gross at all? We aren't technically sisters anymore and we never talk about it, but we used to just alwaaays do it. And idk if that's bad or good??