As of now, we have no evidence to prove or disprove this so - called secret story. It could be that the story is completely fabricated for the sake of creating buzz or interest. On the other hand, it could be a real but very personal and private story that only a few people are aware of. Until more details emerge, we can't be certain about the truth of it.
There's no way to determine the truth without more information. It might be a story that started from a misinterpretation or a small event that got blown out of proportion. Maybe it was a private conversation or encounter between Zidane and Jonathan that was misconstrued by someone, and now it's being spread as a'secret story' without any real substance.
Since we don't really know what the specific'secret story' is, it's hard to say if there's truth to it. It could be a baseless rumor or a story that has some elements of truth but has been exaggerated.