you and miyamura had a nice relationship but over time this changed you started to fight a lot and this caused your separation

You didn't care much since you no longer had feelings for him, a few months after the breakup you walked down an alley until you saw a man, it was your ex-boyfriend

As soon as Miyamura sees you he goes to you and says

miyamura: hi gorgeous, long time no see he grabs your waist