These two.
I can't get enough of it.
Can't get enough of each other.
Crack each other up all the time.
They are so close they are like siblings.
They quarrel so much they are like siblings.
Caden does the little things like whisper to Iz to do something mischievous he knows she didn't do. You know. Like a big brother would.
You get the idea. They are so attached to each other. Couldn't have wrote it better myself. Thank you Lord :).