Is this gross or bad or what?

im twenty years old and not too long a go i spotted the most attractive guy ever!!!! seriously like would to tally date him but i really dont know how to approach him. The thinkg is that im most certain he's way old. i have asked my friends how old they think he is and they all say oh thirty maybe tweny nine. so that's ten years right there. i think about him and get :) when i see him. but it embarres me thinking that he is probably married or maybe even has kids, i dont know would it be bad if i go after him