I have read many times in here where one of us will get out and about and when doing so will look to see if people notice us. Many have said they have smiled This is where you must be careful, if it is a guy looking at you and you smile at him, that is opening the door to say I like you and would not mind getting to know you. If this is not you intention then be careful. GGs do not look at guys they are not interested in and they surely do not smile at them unless they want to be approached. Although this is not true in all instances, I do know that it does open a door for a guy to think he may have a foot in.
SO, Unless your wanting to meet this guy and wanting to talk to him, DON'T look at him or let him see you looking at him to see if he is looking at you. Think back to when you were trying to meet girls. Did you approach a girl that would not look at you??? Most times NO!!!
Don't send the wrong signals, it is a wild world out there and a girl can get in trouble real quick.
BE CAREFUL!!!!!!!!!!!!