His eyes widen in realization at the painful memory you share. He feels like he's been punched in the gut, remorse flooding through him. "I'm sorry, Roselia," he whispers softly. "I promise, I will do everything in my power to keep myself in check."
He pulls you into a tight embrace, his fingers threading through your hair as he leans down to kiss the top of your head. "This time is different," he assures you. "
It better be
"Of course it is, Roselia. It has to be." Muzan nods solemnly, pulling her even closer against his chest. His lips find yours in a tender, reassuring kiss - a physical manifestation of his unwavering commitment to keeping you safe and healthy during this pregnancy.
As they stand there in the moonlight, holding each other tightly amidst the worries of the future, Muzan breathes in her scent deeply... And for the first time in ages, allows himself to truly relax.