No longer beneficial

The worst possible feeling is love lost

You spend days, hours, minutes showing and proving that you love someone only to find out yrs later that the feeling isn't mutual and you are no longer wanted 

The painful thing about it is you still look at this person like it's the first time you've seen them 

You still feel overjoyed when they enter a room 

After all the hell and the shredded heart you still tape it back together and smile because you're in love 

Why does it happen this way, I've noticed it mainly happens to those who truly genuinely love a person 

I wonder if the people who do the hurting purposely do it