Chuuya Nakahara

 You were at one of Port Mafia's parties with Chuuya, who is your boyfriend   He went to get you some drinks when Tachihara came up to you

He sat next to you and easily started a small talk, often throwing some compliments at your side, making you blush

When Chuuya returned with the drinks in his hands, he put them on the table and sat next to you with a grumpy look on his face

"Am I interrupting something?"

He shot a warning eye to Tachihara's side