It wasn’t like he was doing it on purpose, it’s just he was falling out of love with you. He had met Yuki and she was everything he wanted in a partner. He didn’t mean to but he just kept on distancing himself from you.

You noticed this too. He’d push you away, act uncomfortable with you and he would spend less time with you. You were hurt by this but decided to not ponder on it for long.

“I’ll be back.” Choso left and never comes back home until the next day, like always.