The title pretty much says it all... Her parents are, ok with it, but her father's kinda wary about it. There's no sexual stuff goin on, but friends keep kinda nagging me about it, so I was wondering if it's odd for a 18 year old to date a 14 year old. Thanks in advance.

good luck
it's amazing how conforming people are to their culture...
As long as there is no sexual stuff going on, I'd say it's fine.
This guy wants to know if he is genuinely doing something wrong.. Well yes he is. Because although being 18 doesnt mean ur an adult it does mean u have better judgement then her. So just move on to someone ur age or older n have fun.
If u keep going with her it's gonna be a relationship based on fear.. Never fun!