Why are his best friends showing up to my house and workplace waiting and looking at me in their cars?

Why did my ex boyfriend whom I broke up with and later apologized to me and I didn't respond give my addresses to his bestfriends and I found them show up to my house and workplace waiting in their cars and looking at me? What do they want from me? Why is he doing this?
Why are his best friends showing up to my house and workplace waiting and looking at me in their cars?
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