Why is my girlfriend more loyal to his male best friend than me?

Pacifist62
Hello! I am a 20 year old male who has a girlfriend. I will give her the fake name Amy.

Amy is part of a platonic friend group. All of them are best friends with each other. This group has 7 members and the members are 6 girls and 1 male. All of them are 20 years old like me.

After giving my girlfriend the fake name Amy, I will give the other female members of the platonic friend group the fake names Anne, Brenda, Charisse, Chelsea, and Daisy. As for the male member of the platonic friend group, I will give him the fake name Jimmy.

Jimmy is the leader of the group. All of the girls in the group respect him and admire him. They treat him like he is their prince even though he doesn't want them to. At first, this annoyed Jimmy but later, he just didn't care.

Anyways, the entire group are all very close to each other.

But the problem is that my girlfriend is far more loyal to Jimmy than to me. The other girls are also far more loyal to Jimmy than to their current boyfriends.

There was this male that Jimmy hates. I will give the fake name Darren to this male that Jimmy hates. Darren and Jimmy are both good decent people but due to some misunderstanding, they became enemies. Chelsea, who is one of the platonic friend group's female members, often sided with Jimmy against Darren despite being Darren's girlfriend.

Currently, Darren is not Chelsea's boyfriend anymore. The reason is because Chelsea being far more loyal to Jimmy than to Darren resulted in her happily and immediately ending her romantic relationship with Darren after Jimmy told her to dump him.

Due to this, Darren picked a fight with Jimmy but Jimmy was tall and muscular. Jimmy is also very good at Boxing. As a result, Darren was knocked out by Jimmy which embarrassed Darren in public.

Seriously, what is happening? Why is Amy and the rest of the girl members of the platonic friend group more loyal to Jimmy than to their current boyfriends? What should I do about this?
Updates
7 mo
By the way, Darren and I don't have Boxing skills or any martial arts skills. We are also not tall or muscular.
Why is my girlfriend more loyal to his male best friend than me?
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