Here’s what you should not do: stalk him in the hall, IM him 24/7, put his cell number on your speed dial, or tell friends to get the word out that you’re ready when he is. But feel free to smile in his direction, say “hi,” ask a friendly question, and maybe even compliment him on his winning goal or class presentation. Take tiny steps to gauge the warmth of his reaction. As for declaring that, once you like someone, you’re stuck liking him for life? Surprise yourself by changing your ways. This boy is only one of thousands in your community. If he’s nice and attentive, he may hold your interest. If not, you have the power to get out of a one-way crush.