My Childhood Friend Who is My Girlfriend Betrayed Me

My name is Kazuma Nakatani, I have a childhood friend whom I love since little named Maho Mizutani. Maho had been in a relationship before, she dated a guy named Takuya Murakami in the third grade of middle school. Takuya is a flirtatious and good-looking guy, to be honest, I don’t like him. Even though I had held back my feelings for a long time, I decided to confess to Maho. We became lovers and we both are deeply in love with each other. But one day, Maho cancels our dating plans at the last minute and she is acting strange…