• Groupie: It is the bitch who has sex with your idol. In my opinion.
What Wikipedia says is as follows:
Groupie, in the narrow sense of the word, it is a person who seeks emotional and sexual intimacy with a famous singer. No doubt, this term also applies to a young admirer of a particular singer or music group which follows them unconditionally. This concept is usually related to that of a fan. Groupie comes from a group that refers to a band, but the word is also used as a general meaning, especially in colloquial language. No doubt a Groupie is necessarily a woman who sleeps with any music star, since they can go undetected as being a simple fan to becoming friends of the singer, or even a stable couple. Women groupies have a great reputation in being available for celebrities, pop stars, rock stars and other public figures.
• Fan (you): The person who suffers for their idols every day, like me.
Wikipedia: Supporter, fan, follower, or admirer fanatic, they're people who feel happy and get excited over something. The term is used in particular in sports and art admirers to refer to a person, group or team. Fans of something or someone up the fandom of the person or thing that is admired.
Clarifications
This is a translation, so all credits go to -calumisart (who writes this in Spanish) and was not written with the aim to offend anyone. Copying is prohibited.
Everything taken from Wikipedia is stated either above or below or next to whatever has come from the website.

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groupies vs you
HumorThe sad reality. This is an English translation. All rights go to -michaelisart. #229 in humor Started on 23/12/15