Hasi tou Phasi 

Remember in college when you'd follow your crush home and if she smiled at you you'd gain the courage to ask her out? The simple science behind smiling is that it puts the man at ease. Another reason to go to the dentist, brush regularly and floss! A cute smile is always disarming and makes a girl look 10 times more attractive and approachable. After all, you wouldn't want to date a man who looks like a Mafia Don with a sulking face, so, why should it be any different for guys? Smile and engage your man's attention.