Most Helpful Guy
In the future just do it immediately. Anytime you see a cute guy, go say hi. You won't have to worry about it becoming a huge deal in your head.
In PUA we have pick up lines.
It might be beneficial to you to know exactly what you're going to say before you start walking over to him.
Practice on the next cute boy you see at starbucks. If you fuck up, then you'll probably want to have a line ready.
Most Helpful Girl
say hi in a friendly manner.