The 18-year-old, in a desperate attempt to win his partner back, was found half-naked by jail authorities of the detention facility in the northwestern town of Vechta, Germany.
Authorities who found the teenager said the boy removed his clothing in order to avoid getting caught in the barbed wires.
French gangster pulls off spectacular jailbreak by helicopter
According to prison authorities, the teenager had scaled a four-meter (13-feet) wall to reach the window of his former girlfriend - an inmate at the prison - who ended the relationship with him over the phone.
German firefighters were deployed to remove the boy who is being investigated for trespassing and unauthorised contact with a prisoner.
COMMENTS
Comments are moderated and generally will be posted if they are on-topic and not abusive.
For more information, please see our Comments FAQ