Their relationship was based on lust and passion. She is his toy, and the same goes vice versa. Sophia knows that Haruka has somebody else in his heart, and as for her - her heart still longs for the man who broke her completely. The reason why they are with each other is to fill the void in their hearts.
Just as Haruka was about to tear her clothing off, Sophia noticed that he was distracted.
"Haruka? What's wrong?"
Sophia looked over and saw that he was looking at a certain group of men who cornered a girl with an elegant aura. How stupid, dressing so modestly like that in a place like this. Naturally, she would stand out. "Haruka, pay it no attention. It's just some whore trying to seek at--" but Sophia's words fell short when Haruka got off her.
Wait; what? Sophia stared dumbfounded at the spot where Haruka was just a few seconds ago and looked up. Haruka made his way over to the group and pulled the girl into his arms.
