The Bro Code: an age old set of rules and expectations between one friend and another that stipulates “bros before hoes” or “sisters before misters”.
The basic premise is that you don’t screw your friends over for the opportunity to get your kit off with someone of the opposite sex.
JPG uploaded to en.wikipedia on by en: User: Ccdelt.
Text was converted to paths to improve display (unconverted, the file would have been only 5kb).
If you can sense a little bit of harboured resentment then you are not wrong.