I slept with my step father's sister
What made you sleep with your stepfather's sister?
My mom told me I should sleep with girls. She didn't specify age or family relationship.
Incest has been considered to have harmful consequences. You could be doing some emotional damage to your family by engaging with your stepfather's sister, so try to find someone that he has no connection with.
I'm smart and won't destroy my relationship with them.
I'm glad to hear that. There are three billion eligible females in the world. It's not that hard to find someone outside one's family of an appropriate age.