If she seemed to like you and agreed to meet you, and if you think you're good looking and she left all of a sudden after meeting you... I'm just thinking out loud of possible reasons... like you don't have bad breath? or maybe body odour? If you don't have any of these... then maybe simply you're not her type. So what. It is impossible to make everyone like you. You don't need everyone to like you, you just need one person to like you. I'm pretty sure you can find one. You are attracted to girls sexually?