Is it childish of me to erase all the drawings and things my ex wrote in my sketchbook?

Last year (2025) I dated my ex boyfriend, but so many things was really bad in the relationship 'cause he was a fucking asshole, he treated me like I was crazy, like a bomb that could explode at any moment, and, obviously, that pissed me off.

Looking back now, it seems like the entire time I dated him was bad. From the first week he said that if he got into college, we would break up (we weren't even officially dating yet, just seeing each other), but I just ignored all those things, because I loved him

Anyways, during this period, he drew some things in my sketchbook, and now that really demotivates me from continuing to draw, because I feel angry. So, to end this, I erased everything he did in my sketchbook. I think that is going to help me get back to drawing

I felt a little happiness while I was erasing his drawings

P.S.: While we were dating, I tried to resolve these issues and more with him, but he acted like a child, getting angry and not changing