“My daughter, Brooklyn, is in a relationship with a married man and doesn’t see anything wrong with it,” says Courtney. “It makes me disgusted. I don’t understand how my daughter could do anything like this.” 

TELL DR. PHIL YOUR STORY: Know someone with outrageous behavior?

Brooklyn says she met Eric when she and her boyfriend at the time moved in with Eric and his wife. “The main things that attracted me to Eric was his smile and his hair. I love the length of his hair,” says the 18-year-old, adding that the two are now having a sexual relationship. “I’m in love with him, hardcore.”

WATCH: Teen Says Relationship With Married Boyfriend Is ‘Perfect, Definitely Fantastic’
 
The teen is adamant that she’s not doing anything wrong and wants her mom to back off. “My mom doesn’t know that Eric and his wife don’t interact; they don’t even sleep in the same room,” she claims. “This is the best relationship I’ve ever had, and it is absolutely fantastic.”
 
Watch more in the video above. And on Monday’s episode of Dr. Phil, see what happens when Brooklyn comes face to face with her boyfriend’s wife, who says she’s ready to fight for her marriage. Check here to see where you can watch.