What's your opinion on staying friends with exes, and have you ever done it?

Currently, I've been hanging out with my ex all the time. Don't get me wrong, we're just doing friendly things and I really enjoy it. Do you think this is wrong? Or maybe he doesn't think our hanging out is friendly?

Whats your opinion on staying friends with exes, and have you ever done it?
What's your opinion on staying friends with exes, and have you ever done it?
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