There's this guy at my work who's a bit younger than me but he's really good looking and nice. We haven't talked much but when we did we talked about basketball. And we work at a grocery store so he was bagging groceries while I was scanning and he threw a crumpled receipt at me as a joke. He catches me staring at him all the time. Any other tips on how to subtly flirt with him. Oh and my ex works with us too..