Senior Girl and Freshman Guy: 4 years difference?

Hi, I am a senior girl in high school and there's this freshman guy who likes me and I think I'm starting to like him back. I don't know that we would ever date, but I know that a four year age difference is a big gap and somewhat weird. What do you think? To be a freshman hes really mature and and for me to be a senior I'm really immature. I'm not dissing myself but I really am immature at times...I LOVE Spongebob and really am a big kid at heart...I have a childish voice and a very loving/sweet personality...but anyhow: we get along well and I think hes a great guy. I don't want to not go for it and regret it but at the same time do anything "wrong". I know what the law says but I would never have sex with him, I don't even know if we would date...but is hang out with a guy 4 years than you wrong? Is it wrong because Im a girl? Because I know plenty of guys who have girlfriends 4 years younger than them....no one gives them any beef, but since I'm a girl does that make it wrong? P.S- Im 18 and hes 14....4 yr difference Any input or advice would be appreciated...THANKS SO MUCH EVERYONE