I've been wanting to ask this to someone since my brain has been rotting thinking about this.
Has anybody ever considered maybe, just maybe, Asuka x Shinji x Kaworu?
I have seen Asuka x Shinji, Kaworu x Shinji, hell I have even seen Kaworu x Asuka, but never the throuple. Any thoughts on them mayhaps everyone?
While I couldn't ever deny anyone a throuple, I feel like the main roadblock here is that Asuka canonically does not want to share Shinji with anyone. She wants all of his love for herself. I'm sure there would be a way to work around it to make Asukawoshin happen, though. Like, if she and Kaworu are dating first and then Shinji comes bopping along and they're both like, "oh!"