Yes its all about fears not so much about the lines. You can say anything. If a girl
doesen like you she will say fuck off and that will hurt. Thars why most pua-s recomend using negs, with them you dont fear rejection because you "where not hitting on the girl". On the other side if a girl really likes how you look youll only shoot yourself in the foot by going indirect and acting disinterested. If you can deal with rejections you can aproach the best way- simple and honest. Like: Hy, you looked interesting. I thought I would come and introduce myself.