I really like him, but is he too young?

Ok. So I really like this boy, and he is the sweetest guy ever. He makes me smile and feel wanted more than anyone else ever has. The only thing is, he is younger than me. I'm 18, and he is 16! He turns 17 June 21, but I turn 19 June 23! So we are 2 years apart. I want to not care what people think and just go with it, but I do care so what do y'all think???