Is she staring at you, or do you just happen to look up and see her looking at you every once in awhile?
When I was single, if I was interested in someone I would casually watch them. There’s a lot you can learn about someone just by observing them. But definately not stare! The idea was that they were never suppose to know I observed them.

I don’t know about that winking suggestion. I’d have been 100% embarrassed if someone would have winked at me!
Now we are all curious about the details. We ladies love to see a good story unfolding.
