You do not date your friend's ex without asking. You do not leave a wingman hanging. You do not tell a bro's secrets. These are not laws. They are the bro code, an informal set of rules among male friends. The term was popularized by the TV show How I Met Your Mother, but the idea is older. It is a social contract. It says loyalty matters more than convenience.

The bro code is not written down. It varies by group. Some rules are universal: do not snitch, do not steal a girlfriend, do not let a friend drive drunk. Others are local: always split the bill, never text an ex after midnight. The code is enforced by shame, not punishment. Breaking it can end a friendship. Keeping it builds trust.

Common rules

• Never leave a wingman alone.
• Do not date a friend's ex without permission.
• Keep secrets.
• Help a friend move, no questions asked.
• Do not flirt with a friend's crush.

The bro code is not for everyone. It can be sexist. It can be immature. But it serves a purpose. It gives men a script for loyalty. In a world where male friendship is often shallow, the code asks for something more. It is a small ethical system. It is not perfect. It is real.