Look, MС does nothing but help everyone around him. With his help, Lucy finally stepped out of her sister's shadow. He made her feel needed. And beloved. He's always kind to Emma. He helped her cope with Zack's bullying, helped her become more confident, and supported her in her career. Her dreams about him are well-founded: it's hard not to fall in love with such a teddy bear.
It's more difficult with Suzi, but he only helps her. For example, in the case of the phone. Moreover, he surprised her, without asking for anything in return. She thinks all men are perverts. And she expected this from him. I'm sorry, Suzi, I'm going to have to disappoint you.
That's why the harem works great in this game.: ALL the girls quite reasonably fall in love with him. And if so, then the issue of sharing ceases to be a problem.