Is it bad that I get happy when my ex does shitty?

I just realized it today. My ex posted a facebook of how she just broke up with her man cause he “treated her like shit.” It actually put a big grin on my face to read that she failed yet again. I haven’t spoken to her for 2+ years, but seein her facebook post actually made me somewhat happy.

Is it bad that I get happy at the fact that someone else is doing shitty? What does this all mean