Oh, he's definitely a creep of major proportions, but since he's going after a girl with a full set of secondary sexual characteristics (and how!), his creepiness doesn't include pedophilia - depending on which state, if she'd consented, he wouldn't even have to worry about statutory rape charges. As it is, if she wasn't a murderess, he could potentially be facing charges of forcible rape, so that latter's a distinction with little difference right now, though.
It's just one of my personal pet peeves to extend the definition of 'pedophilia' up into the late teens.