Don't think about dating a boy who cares about compliments and approval from other people on the internet, even if he is just joking around. He isn't really.
Don't think about dating a boy who was recently in a long running relationship or who has had a history of an on and off one You will end up writing about being the in-between girl who's never enough. He will likely get back with her or find someone other then you.
Don't think about dating a boy who smokes a lot of ****, you don't honey. You will end up hating him because of who he is and you shouldn't he chooses to live differently than you that does not make him or you wrong. He will not change nor will you.
Don't think about dating a boy who gets onto you for not believing in certain things. If he makes you feel inferior, do not take that. You are your own person there is no right way to live one's life. The right way is the way you choose and that which makes you happy.
Don't think about dating a boy until you have learned to love every imperfection society tells you your body contains. Until you turn the scars on your wrists into musical notations writing a symphony of joy and pain.
Don't think about dating a boy if he isn't enough of what you need and you aren't yet happy.