Everyday,he writes poems. Either if it's about his crush or not.

It's the point where he can't do anything to stop those feelings from resurfacing whenever the hotheaded blonde is in sight. So, to cope, he writes poems. He writes his feelings down word by word until he's satisfied and able to accept the reality of his 'one-sided' situation,as he thinks it is.

It never really stopped.

Katsuki took his poetry notebook in class one day, and won't return it.