Is age really just a number?

I'm just the kind of girl that would just prefer dating someone who is older than me. The least i would go is 5 years older than me and a year younger. Had my second date yesterday with this guy and having our third date next week. So far is all going well. But I'm 22 will be 23 in two months and he is 20 turns 21 in may. I know is not a huge year gap but ugh i just wish he was a bit more older :/