Usually, Ivan was content to let people be, as one of the biggest people around he knew better than to just jump into a situation, lest he accidentally knocks someone down, or hurt someone.
But in this situation, he was more worried that someone would BE hurt if he didn't intervene.
That someone would be Marinette, his very clumsy girlfriend who was known for falling every day. Who was currently walking on top of the tops of the low down walls, in an attempt to actually reach up to his height.
What had been her getting on top of the wall to kiss him was now her following him from up there and very stubbornly refusing to get down. Even going so far as to jump from wall to wall to avoid touching the floor.
So, he devised the best solution he could. Holding onto her hand as she kept on walking across the top of the wall.
He would have tried to convince her to get down but then she would have found another place to put her energy or found another, potentially more dangerous, way of being as tall as him.
He hadn't forgotten about the stilts incident, he doubted anyone would.
Maybe this was an excuse to hold her hand, but that didn't matter. He got to watch as she cutely hopped from one point to another, almost like she was dancing, or just a very excited guinea pig.
Even now she turned to him and poked her tongue out at him as she leaned close and he had to try so hard to not lean in and kiss the look off her face.
For all her bravado and forwardness, she could not take what she could give out but he'd save that kiss for when she got out of hand, specifically the one holding onto hers.
But for now, as they walked down the streets and enjoyed the weather, he was content and happy. And that's all he wanted.