You just broke up with Muichiro since he's cheating on you and now he wants you back and the only solution is to make you jealous

You were walking on the hallway with your friends when you suddenly stop, You saw Muichiro hugging with another girl which made you slight jealous and there's a wide grin on Muichiro's face when he saw you

"Oh babe..~ Do you want to have some lunch later...??" Muichiro asked to his new 'girlfriend'