People have different ways to express their feelings. Some people prefer to hide them from the world under the guise of jokes and sarcasm, someone fearlessly expose their emotions to others.
Someone is afraid that his feelings are hurt, and he was hiding from any demonstration of their affection. For some it becomes an obsession, someone too stupid to think of himself. So there are people who do not believe in love.
But as there are examples where the most cold-heart cynics sweet smile at the sight of one man.
So, for every Romeo and Juliet have their Bonnie and Clyde, but if you look closely, you can see that they differ little.
Maybe people are too fixated on what they are imperfect, rather than turn off the brain and surrender to the irrational, but such a happy heart.