accidentally (by chance) looks at me? Suppose you look just ok/average i.e. neither too handsome/cute nor too ugly. And a stranger girl at a public place happens look at you(momentarily/unknowingly) while searching for something (say a shop on the street) and your heart says, "hey,i like her.i want to be friends with her or may be love her,but being friends first" and you can't really get an unknown girl talk to you just like that. So,when she looks at me,which expression should i have on my face to make her atleast think about talking to me (atleast ask me where she can find a shop or something,if not my name,etc,etc) or atleast look at me for some more time?