Is bro code really a thing or just high school bs?

So my friend wanted to date our mutual friend ex girlfriend. I told him he couldn't because of bro code 😅he's like what bro code? So I spent 30 mins explaining to him what it was and showing him videos about jt. Is bro code really a thing or high school bs? A unspeaken rule. I told him to ask our friend promisee to date his ex
Is bro code really a thing or just high school bs?
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