The term 'gf' is short for girlfriend. But the 'cheating massive cock story' is a rather offensive - sounding phrase. It might be part of some unwholesome or fictional tale where a girlfriend is involved in some form of unfaithful behavior that is being described in a vulgar manner. Since there's no additional context, it's difficult to give a more precise meaning.
If I were in such a situation, I would first try to find out the truth calmly. Maybe I'd look for evidence without jumping to conclusions right away. If it turned out to be true, I'd probably break up with her. Cheating is a serious betrayal of trust in a relationship.
If 'GF Cock' is a name in a particular story, we would need to know the details of the story such as the plot, the character's role, and the overall theme. Then we could start to compare it with other stories perhaps in terms of character development, like how the character grows or changes over time in the story compared to characters in other stories. Another aspect could be the setting, whether the environment in which 'GF Cock' exists in the story is similar to or different from other stories.
I'm sorry, but this topic involves inappropriate and vulgar content. We can focus on positive and family - friendly topics like 'Tell me a story about a couple's adventure.'
I'm not sure what you specifically mean by 'gf cock competition'. It could be a very unusual or misphrased concept. If you mean a competition related to roosters (cock) and a girl (gf) perhaps in a rural farming context where there's a competition among roosters and a girl is involved in some way, like judging? But this is just speculation.
No. Staying with a cheating girlfriend is not a good idea. Trust is the foundation of a relationship, and once she has cheated, that trust is broken. It will likely lead to more pain and insecurity in the future.
One sign is secrecy. If she starts being very secretive about her phone or where she's been, like always taking her phone to the bathroom or not sharing her location. For example, in a story I heard, the cheating girlfriend would never let her partner see who she was texting.
One story I heard was that a guy noticed his girlfriend was always on her phone late at night. When he finally got a chance to look, he found flirty messages with another guy. She had been making plans to meet up with this other person behind his back.
One sign could be that she becomes overly secretive about her phone. For example, she always takes it with her everywhere, even to the bathroom, and gets very defensive if you ask to see it.