You Keep Exaggerating It - Love For Rent Episode 9 

Sunan had no rights asking Dafne if there was something between her and Omer. He was only interested for his own benefit.

I don't know these two can remain partners. Ever since Defne came into their lives Sinan has been against everthing Omer does and not in the interest of the company. Sinan's anger is too much and his jealously.