Knox didn't know how to break this matter to July. He knew that he was being unfair to her and had dragged this matter for so long.
In the past, the first time he saw her, when they first met, he thought it wouldn't be a big problem. He thought it would be solved by time, he thought they would be together for as long as they lived.
He could watch her grow old and would always be by her side, no matter what happened, no matter what the reason, there was nothing that could make them apart.
Yet, the problem that he initially thought was nothing became bigger than he could ever imagine.
Their purposes in life were very different, they were not coming from the same state of mind and Knox couldn't give her what she wanted the most. Something that he thought would never bother them, but in the end, this was the thing that drove them apart.
"Let's end this."