The girl told me that if you want to live a good life, you must wear some green on your head. What does that mean?

This girl is not a good girl at all, but a fool. When she said this stupid thing, she meant to cuckold you, that is, she has other men besides you, so that you can be prepared mentally. She could cheat at any moment. Get ready! Another possibility is to decline, which means that you may not be worthy or unique. Green refers to having sex with a lover and another person at the same time, which is not simple, so this kind of girl may talk about it, or put it into action and think more. So you have to think for yourself. If you want such a girl, you may be cuckolded at any time. Can you stand such a half-dead weather? If you can't stand it, you can only muddle along and turn a blind eye. If you can't stand it, there's nothing you can do. Anyway, I suggest that such a girl is not allowed. Her ideology is wrong, and you may be cuckolded at any time. Do you want it? Do you like it? If you like it, go after it. There are so many good girls that there are plenty of fish in the sea. Why not find someone else? Right? So, please think about it yourself!