Pembroke Pines police say 23-year-old Carissa Rangel was sleeping with a 13-year-old boy.
We say was because that came to an end when the kid's mom heard "moaning" coming from his bedroom and walked in on them, police say.
According to a police report, Rangel was at the apartment the kid lives in on Monday when she started off by kissing and groping him.
At one point, she had her "vaginal area" on the kid's face before they went on a walk behind the apartment building, where police say Rangel decided to pee on the ground in front of him.
They went back into the boy's bedroom, where the two had sex condom-free, according to the report.
Around 1:15 a.m., police say the kid's mom heard the "moaning" coming from the bedroom, and when she unlocked the door and went inside, Rangel told the boy's mom that she was "getting it done right."
The kid's mom removed Rangel and her belongings from the apartment and immediately phoned the cops.
The boy told police that Rangel had had sex with him on two other occasions, but not inside the apartment, according to the report.
Rangel was arrested that same day and is being charged with lewd or lascivious battery, three counts of lewd or lascivious conduct, three counts of lewd or lascivious molestation, and a probation violation related to a previous battery charge.
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Rangel, a resident of Port St. Lucie, is currently being held at the Broward County Jail.