Then you severely misunderstood my post, because that's not what I was trying to say at all.
I never said that CJ and Flick can't be a couple because they're already friends. What? Did you even read my entire response or did you just read that single sentence you quoted out of context (I appreciate it btw... /s)? Yes, I agree with you that friendship can evolve into a romantic relationship. But that is not always the case, you said it yourself: It's not simply an upgrade. What I was trying to say that two people can be really close without being sexually/romantically attracted to eachother. But that doesn't mean that these two relationships are mutually exclusive.
i did read your post, however people already picked apart the rest of it so i saw no point in doing so myself. Your paragraph from which i quoted from heavily implies that seeing two characters as romantic is equal to devaluing friendship when that is not the case and that's what i'm trying to point out. these conclusions, especially among lgbt fanbases, are usually drawn because their close friendship would make them a good couple. it is not a matter of throwing their canon relationship out the window.