The ship isn't as popular I think because it's not two maknae line members, and also the fandom sees them as chaotic friends. And there's a lot more interactions with these two than the forced fanservice of the maknae line. Anyway, I don't think friends do this...
Back hug jn
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Photobomb jn's selfies and wrap his arm around him with no shirt on. It's sus
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And to keep on topic with jk possibly being groomed, you can see how he acted with jn when he was a teen. He fought and ignored to get close to jn just like he did with jm at that time. He clearly doesn't anymore.
And after the very disturbing clip that was shared on here with yn touching a teen jk's privates..I'm thinking he was groomed by the whole hyung line. Makes me sick!