What would you do if you ran into your abusive ex in public?

He/She was abusive and that's why you left them. Ever since you two broke up, you never contacted them or respond to their calls or calls.

After years he/she decided to contact you, but you didn't respond.

What if you ran into him/her in public? What would you do?
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to their messages* or calls.
What would you do if you ran into your abusive ex in public?
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