A warm smile at the beginning of a day makes such a difference to waking up in the morning, and another one greeting you when you come home can make all the stresses and strains of daily life dissolve in an instant. A lot of people will tell you the first thing they noticed about their partner was their smile.
Smiling does more than tell your man that you're feeling good - it reassures him that you're happy with him. It gives him a sense of security; it says "Everything is okay". It can defuse an argument before it gets out of control, and it can settle nerves and anxieties. If being around your man fills you with joy, don't be afraid to show it on your face. There's a reason that the smile is the most popular emoji!