Questions: Flirting

Growing up, we've all had a lot of crushes. Even as adults, we continue to develop feelings of attraction towards the people we see in our daily lives. But What I want to know is, is it alright to pursue your crushes and to want to develop a deeper relationship with them?

This is personal to me because I have a crush on someone on my course at college, and growing up I've had so many just like that crush where I've not said anything and nothing has come from those crushes... I quickly realised that crushes don't last, and that it's easy to move on from people you never had a relationship with. But I'm in college and I've never dated a boy, let alone kiss one in my entire life! And I wonder if now is the time to try and make 'advances' at my crush, or at least, try to get him to notice me and one day to hopefully have a conversation... lol.

and I don't mean eye contact for a second or less.. Which is just throwing a glance. I mean looking in someone's eyes for at least 3 seconds or over. What would your reason be? Vote!

(actually just asking out if curiosity since someone was ''watching'' me today lol)