Should I block my ex?

My ex boyfriend of almost three years and I broke up about a month and a half ago. We haven't talked since, but I noticed he had blocked me on social media the other day even though we weren't friends with or following one another.

Today he texted me asking if I would block him on Instagram because he keeps looking at my profile and it's making him depressed. I guess he unblocked me and doesn't have the will power to keep me blocked so he asked me to do it for him.
Should I block my ex?
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