Of course!! ^^
There’s so much I could say but I’ll answer your questions first. Nour teases Malleus sometimes to make him pouty, they think he looks really cute and silly… They tease him about how adorable he is and how bad he is at trying to hide how he feels from them. Malleus may try to hide that he’s flustered for example, but Nour would know and tease him and kiss his face a lot etc. Malleus loves to tease Nour too, he teases them about how easily flustered they get. He barely has to do anything to make them a blushing mess and he is very amused by it.
Their favorite things about each other hmm… Nour really loves how caring Malleus is, but they also like his mischievous and playful side and they wish more people saw it. Malleus really loves how patient and understanding Nour is. People are always misunderstanding him and making assumptions about him, but Nour always takes the time to figure him out better before jumping to conclusions. They also both really like the commonalities between them since neither of them have really met anyone like themselves before and they’ve both felt so isolated and lonely.