Have you ever found yourself staring at every single detail of a room you're in? The uneven paint job, the cracks in the wall and the hardwood floor with dirt stains near the door - everything doesn't make sense to you, but somewhere in the back of your head, it kind of does. Then, you just sit there for hours on end, staring blankly at everything in the hope that something might move or shift, but that never happens. You know it's never going to happen but you continue doing it anyway. Why?
The human mind is a complex little fucker. It's designed to crave for things that it knows it can never attain. You know how they always say "it's all in the mind"? Well, that's complete and utter bullshit. If somebody kicks you in the balls, would the pain just be 'all in your head'? Fuck no. You just got hit in the balls. What you're feeling is nothing less than real.
Now, let's change up the analogy a little bit: let's assume you're completely into this one girl you met a few months ago. After a while, you start getting to know her better and you realise that she's not like anybody you've ever met. Her smile is now more than just a smile, her laugh turns into the most beautiful sound your ears have ever had the pleasure to listen to, and her very existence makes yours meaningful. Okay, now what if I were to tell you that she's in love with someone else?