To Sehun, Luhan was his everything. But that wasn't the case when it comes to Luhan. Being close to Xiumin after being with Sehun was already enough to show a fact that for Luhan, Sehun wasn't his everything. 

He has already been hurt, to the point that it will leave scars in his heart.

Luhan has been, and forever will be etched in his heart and mind.

But he has to move on.

He has to forget the feelings he have for the male before it's too late.

Before he breaks down and never recover.

Before he loses his sanity.

Before he completely forget who he really is.

Before he drowns himself into something where no one can save him but Luhan.

Before everything becomes too late.