Daughters Group Texts

I assumed my 22yrold daughter accidently added me to her group text. It was mostly her female friends. The texts got more and more racey. Guys were added to the group. There was well over 20. I noticed my 18yrold son was now in the text circle.

Pretty quick sexy pix turned to nude pix then to masturbation clips which turned into sex videos.

I woke up to my daughter sending a clip of a video she took of her mother and I fucking the night before.

I about lost it...

This morning I woke to a video of my son and 4 others gangbanging my daughter.

I KNOW I shoulda let her know immediately and to have her remove me from the texting group circle, but I got turned on by all the chatting and pix.

Now I don't know how to get out short of blocking everyone including both my kids...