Why brother of my ex followed me on instagrqm?

Anonymous
I have been seeing with some guy for almost 3 years. I met his brother, he new about me. He said that I am nice, good for his brother. I end up with that guy, he found a girlfriend. And after a while his brother starter following me on instagram. Why he followed me?
Why brother of my ex followed me on instagrqm?
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