Sometimes it happens that in our life we find some people, to be precise, one person, who is special, who is unique and who is out of this world. We are so much obsessed with that person that we try to search that person in every single person we meet, which practically is impossible.
That is the reason some people turn out to be most silent, cause they are been habitual to talk with that person they are obsessed with and the talks with others seem disinteresting.
Some people leave by making such a place in our life that it seems impossible to fill the hollow space created by their going away from us.
There's not an off switch, once you love someone you just don't stop, no matter how broke you are inside, you just don't stop caring and doing all those things which makes your special person happy, you just don't stop.
Love is the only thing which is necessary to live happily, because that thing turns this world from a longing place to happy one.