Would a girl think its weird to date a guy that's 3 years younger than her?

I know this girl and she is just awesome. I love everything about her and ive known her for about 13-14 years maybe more i cant quite remember. Every time I see her or think about her I get this queasy feeling, and I get thinking that I would really love to someday Marry her. So the question is, would she think its weird to date a guy that she's known most of her life that's 3 years younger than her? I'll be 19 in about a month and we're both very religious advent christians, i don't know if that helps but what ever, please help.