Hi, if it's based on a poorly written Wattpad story, that makes perfect sense.
But if, on the other hand, you want to make it more canonical, I’d suggest you research the characters’ personalities and their lives in general so you can write about them more consistently, including checking out references in other works for further support. Since it feels like the typical cliché of “I’m mean/apathic, but as soon as I see you, I become gentle and kind to you.”
English isn’t my first language, so I apologize if there are spelling mistakes or if I sound too blunt. I hope you can understand what I meant, thank you