David Telles from California, flew to the UK in June to meet the 14-year-old after exchanging messages online.
He took her from her home in Cornwall to a hotel near Exeter - police found them 4 days later.
The 38-year old pleaded guilty to meeting a child following sexual grooming, abducting a child, three offences of sexual activity with a child, and engaging in a sexual act in the presence of a child.
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