Talk to them. Yes it's frightening even the concept of it.
They are not drones, they are your human parents, they have 'commented' on it for a reason. Other parents would have already flown into a rage and beat rather then come to them, listen.
It's scary, but it's obvious they love you, and are respecting you enough to not accuse. Dear one, you are lucky; Do not burn the bridge between you and loving parents. Yes they may wail and be hurt, so be it. Be prepared, don't be a snarky ass in response.
Be honest, be yourself don't accuse, just be honest without a whawha crying jag. Be an adult, not a big scary adult child blaming them for your actions. We forget they are people too not just unfeeling meat.
Good luck,