I don’t think you’ll need any longer lectures about this, because when a lady likes you, she’s going to continually be smiling except you have something funny on your face at you once she sees your face even in weird situations.
Whenever smiling is re-occurring on a basis that is daily avoid being too busy to see or attempt to ask her why she actually is smiling at you because for many girls that real question is a deal-breaker.
All you have to do would be to compliment just how gorgeous she appears whenever she smiles and exactly how you shall want to see her smile more frequently.