Suki to Iu no ni Naze Kashira

The story of boss, Takehisa, and the chef, Yuuichi, from Ubawareru. Yuuichi met his ex-boyfriend, Kiyohito, coincidentally outside the restaurant. Since then, Kiyohito kept hogging Yuuichi to go back to him. On the other hand, Takehisa actually agreed. What should Yuuichi do? Also includes the concl