I think that's a rather odd bit of speculation without any evidence at all. Candace showed text messages between them where she was helping him with his romantic pursuit of Erica. Seems more likely that they had a strong bond of friendship.
Watch Candice’s memorial video to Charlie Kirk:
She describes her relationship with Kirk there and it was clearly not romantic.
I‘m aware of those videos, text messages and that they were friends and nothing more and the circumstances why they traveled together and such. I was just saying that after I watched some of the videos of the two interacting and knowing how close they were in a platonic way that I wouldn’t rule out that at least one of them could have had a bit more then platonic friendship feelings for the other in secret, possibly without the other one or even themselves truly recognizing it. But obviously, that’s just pure speculation on my part and it is more likely that they both just felt pure friendship for eachother as they both made clear as well.