I don't think so. I see it as Luna having a crush on Ron, but Ron not liking her at all (in that way) 'cause he likes Hermione. But, Hermione for some reason starts to think that Ron and Luna are going out so she starts to get jealous of Luna and realizes that she likes Ron, so by the end of the sixth book or beginning of the seventh Ron and Hermione start to go out.
So, after that happens Luna realizes that she doesn't have a crush on Ron anymore and starts to hang out with Neville more, since, in a way, they are both kinda outcasts that have just started to shine through. So, by the end of the sixth book, maybe even more toward the middle they will start going out.
Now, finally! 😄 With Harry and Ginny, since Ron and Hermione are both prefects and are starting to figure out their emotions and feelings with one another they sorta abandon Harry, of course not fully, but they won't be there all the time! 😛 Now, Ginny, I believe had grown to know Sirius in Number 12 Grimmauld Place and saw him as a friend, she went with Harry to "save" Sirius because of Sirius... and Harry and Ginny were really the only ones that went because of Sirius, everyone else went for different reasons. Anyway, so during the sixth book I think Ginny and Harry will end up working together, in a sort, to free Sirius' name and capture Wormtail... I don't think that Harry will encounter Voldemort this upcoming year! So, they end up capturing Wormtail and become good friends. Now, last but not least in their seventh year (Ginny and Luna's sixth) I think that Ginny's bond with Harry will come into play and that Ginny will do something to show how much she cares for Harry and then Harry will finally realize it and they become a couple near the very end of Harry's seventh year and Ginny's sixth! 😍
Yeah, okay, now you have heard my whole theories on how the couples will come to be in Harry Potter! 🙂 Sorry 'bout the long ramble.... 🤣