Kornel Grygiel
Kornel Grygiel voted up John Doe's answer
I've discovered that my teenage daughter has been performing oral sex on her boyfriend while he watches porn. I don't want her to know that I have spy software on her laptop, but I want this pervert gone. How can I break them up?

I'd tell her that the computer has that on there....she'll be mortified and hopefully won't be bringing you a bouncing baby anytime soon.

Kornel Grygiel
Kornel Grygiel voted up Barb Cala's answer
I've discovered that my teenage daughter has been performing oral sex on her boyfriend while he watches porn. I don't want her to know that I have spy software on her laptop, but I want this pervert gone. How can I break them up?

Didn't you think this through before you added that software?  You're the parent.  Tell her she's busted and educate her on what her sex games could lead to.  It's your job to make sure she does the right thing.  If she's underage .. call the cops and let them handle it.