Duke as a poet who writes hopelessly romantic poems for Izzy and leaves them all over for her >>>
She opens her locker and like 40 different pieces of paper fall out onto the floor, they’re all either annotated love songs or original poems duke wrote in all fancy calligraphy (that he definitely forced babs to teach him)
He has notebooks Upon notebooks of love letters to her, ranging from downright Shakespearean to essentially ‘Jesus your hot’. He’s obsessed with her, would drop anything and everything the second she calls him, he has 100% stopped in the middle of a battle to text her (the riddler was weirdly ok with it and gave him advice, no matter how questionable it was)
He’s forced Harley, Luke, Damian and jay all to listen to him just talk about her for hours. Bruce loves her too, he’s just glad one of his kids can hold a stable relationship, and he’s happy that he doesn’t have to hide anything from her since she knew it all to begin with. Selina thinks it’s adorable, that’s her step-son yes she’ll absolutely steal the $400 jacket so he can give it to his girlfriend.
They promise each other to get married as soon as they’re out of school, since they both live and work as hero’s they know how important it is to be legally connected to the people you love, plus they already have matching rings and piercings
Izzy had mostly silver jewellery, and duke has mostly gold, but they trade a lot. Duke now also has one hoodie and he’s certain Izzy has the rest he just can’t prove it.
Duke consistently losing when he spars against her because he just gets so distracted by how pretty she is, Tim and Steph mock him for it but they’re both exactly the same with their partners
Izzy likes to make things for him, patches, jewellery, charms, the works, he loves them so much, he has a box in his room dedicated to the things she’s given him (and it’s definitely isn’t boarder line a shrine)
They’re phone screens and both each other covered in lipstick marks smiling like idiots, Izzy’s is duke with red kiss marks all over his cheeks, and wearing orange lipstick, Duke’s is Izzy with orange kiss marks everywhere, wearing red lipstick
Overall they’re just sickeningly cute