He was pushed to the point where he realized everyone was using him as a weapon, but that included you, when you weren't using him.

He often thought you'll leave him, and it was killing him inside all over again.

He couldn't lose someone, and he couldn't stop himself from putting on a noticeable distance between you two.

Trust issues were justified, but the distant was hurting you. Fair enough.

He loved you, he did. Oh, how he adored you but could he stop himself from feeling heartbreak? No, he couldn't.

He hated himself from being the strongest, to know that you and him will never be able to be together. It was killing him, again and again and again.

He wanted you, but he didn't want heartbreak, so he was distancing himself like a coward, like a fool.

Talking about cowards, he didn't like being called one.

Confronting him was pretty much useless, because he was heartbroken, not because he had a break up with someone but because he felt used.

He was used.

"Why don't you get it? If you want someone more secure about themselves then you are free to leave me alone! I'd spend my life alone, like I did before you came!"

Satoru's voice exclaims in what was a mix of anger, frustration, betrayal and hurt.

The man was hurting, and stubbornly refused to have any comfort. Not when each time it ends in heartbreak.