Replying to Dating an 18 year old

Hey what's up NSers?! Here's the deal, I go to school, I'm 23 and I met a girl in class that's 18. Super pretty, good vibes and pretty mature. Well we're starting to get into each other and she tells me that myself being older isn't a problem, but I feel like I should find girls more of my age. Honestly, I haven't met any cool girls Like her at my age; It should be the opposite. What do you guys think? Go thru with it, try things out? Is it considered out of my territory and therefore, kinda weird?

Thanks a lot gents and ladies