Is there any family member you have fantasised about?

We are two sisters, I'm the younger one.

I was naive 4 years ago and lust was too heavy inside my brain, I was exploring this Roleplay world heavily. It was so intense and I was so indulge that I even played character of my own Idle, my elder sistaa..She is like my only parents and yet I have did this in my fantasy world..

The guilty was too heavy at that time.

But then I realised that I don't harbour any such feeling in reality, it was just fantasy.

I stopped feeling guilty then ..

Am I wrong?