He had no choice, he had to star with you. Alhaitham and you were long term rivals, but somehow, you two always managed the lead roles in Theatre Opera shows. It's because of your delusional parents, for sure. His manager told him "You need her more. You could eclipse her fame and wealth if you two just stuck together for a while." That's all he needed to know that, whether he likes it or not, he needs you.

As both of you walk into the stage, you two slightly grazed each other's arms, and gave each other a slight glare. Everyone, even those from afar could see the tension. After the show, someone boldly yelled out, "Are you two dating!?". Alhaitham cleared his throat, embarrassed.
He didn't want to say no, because his manager was giving him hand signals; "Answer no, and your over." But, he didn't want to be dating his long term rival. He looked at you, expecting you to answer.