If you really want to know the truth about her smile, follow these steps and do it exactly as it say
1. Get to know her friends or family member ( don't let her notice and it should be only one person )
2. Ask her friend if she has any close friend (boy)
( don't let anyone know that you have feelings for her )
3. By the time, you'll hear information like she admire that person and so on.
4. This is very important. You pass words like 'isn't she cute or sweet' through her friends
5. If she like it, she'll wore smile face like you said.
6. Try to communicate with her and keep eye contact but don't do it often. She woun't like it.
7. Now inquire to her friends if she has said anything about you
8. If it is good, don't rush to love. Care should be first
9. Then you'll get the outcomes.
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Beautiful heart are easy to notice and this is what girl wants.
Good luck
nasirikamal