happy?

 ( photo taken by http://sayingimages.com/tag/tumblr-pictures/) 

"I'm happy" she lied

sometimes v used to be like this.. 

lied to everyone that we are happy..

but... i think

 it will be happier if we lied rather than telling the truth

p/s:  是不是生气得不明显就会被认为不会生气？