How do you know girls think you are hot?

If your hot she's glance at you fast and look again right after for a little bit long than she did the first time. If your ugly then she might stare at a certain ugly feature you have instead of looking you in the eyes. If you have a nice facial structure and features AND your eyes are a really nice colour you are automatically "hot." (hazel eyes are really nice but blue and green are the best)