Turning the page (Ayato x Yui)

Yui Komori, was a happy lady with her boyfriend Ayato Sakamaki during her 18 years of age. Until one night, they crossed the line of their relationship, not that she regretted though. After a month, she found out she was pregnant with his kid. She was happy and ran straight to his home to tell him. After ringing the bell over and over, there was no answer and she entered, only to find him naked with a bitch in his bedroom. But he was asleep with her. Tears rolled down her face as she left the man she loved and went abroad.

9 years later, Ayato went abroad for a business trip and eventually came across his unknown son.

Ps, I will base this on the anime. I only own the story, not the characters.