>>5118451The definition of pedophile is as follows:
The act or fantasy on the part of an adult of engaging in sexual activity with a child or children.
12 may or may not be considered a child (that's subjective) but it would fall under hebephilia, which has the following definition:
Hebephilia is the strong, persistent sexual interest by adults in pubescent children, which is typically ages 11–14. It differs from pedophilia, and from ephebophilia.
So it's definitely one of those.