Trust. It is a complicated thing, not easy to fully gain either. It must be earned to properly receive it and when you give it you must give it without exceptions. Trust is taking a risk and it isn't something you should do lightly. But it is the one thing you will always need in a relationship. A relationship of any kind can never last without it, but to give it is to put yourself in a vulnerable position. It is why it is so hard to find because to trust someone with an open heart means you are easy to break. That is why in a relationship you must both be willing to put yourselves in that vulnerable state to prove you really do care about your partner. But one thing is obvious about trust: it is easy shattered – even more so if it wasn't even whole to start with.

Key and Jonghyun had been in a relationship for a while now and everyone thought they were the perfect couple. Sure, they had their arguments, but honestly: what relationship doesn't? They were madly in love and it seemed like they would go to the ends of the Earth and back for one another, but that didn't mean their relationship was perfect. Not by a long shot!