Age gap relationship advice.

So I like this girl who’s (f)16 and i just turned (m)19. We’re both at the same high school, and she’s now a junior and I’m a senior. Due to starting school late(thanks to parents), and going through some emotional stuff years ago I got held back a year. But we’re both in similar situations as in places in life both soon to be out of high school and go to college either in a year or 2 respectively. We’re really close friends and have been for about 2 years now. I kinda get the feeling she might like me back but I don’t really know. I’m honestly not really interested in physical stuff rn like sure it’s fun but I don’t see her in that way, I just like her for her not physical things. But idk if it’s weird to date someone with a three year gap despite only being a year apart school wise.