“Corryn’s insane and crazy,” says Jack of his on-again, off-again girlfriend of two years.

The 17-year-old claims that when he invites Corryn to his house, she often overstays her welcome and he has had to physically pick her up and put her outside so she will leave. He also claims she is a stalker who shows up at his house uninvited and hides in the bushes to watch him.

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“She will literally jump over neighbors’ fences, and yards and properties and hide out,” Jack claims. “I would kick Corryn out and then she would end up breaking through my sister’s window, and I would wake up that night, and guess who would be right next to me? Corryn.”

Corryn admits that her behavior has crossed the line, but she says, “Jack is my boyfriend, and we’re in love.”

WATCH: Mom Says Teen Daughter’s ‘Obsession’ With Her Boyfriend Is ‘Ruining Her Life’

The 19-year-old admits she has called Jack more than 100 times a day and that she has hid on his property to see if he brings a girl home.

“My relationship with Jack is very difficult but I love him and I want to be with him,” Corryn says. “Even if he denies it, I know he loves me.”

Hear more about their relationship -- and Corryn’s behavior -- in the video above. And on Wednesday’s episode of Dr. Phil, hear why Corryn says Jack plays games with her, and why Corryn’s mom worries her daughter is going to land in jail. Check here to see where you can watch.

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Teen Admits Behavior Toward Boyfriend Is ‘Out Of Control’