I agree with #1 personally. There’s tons of examples where Byler has been paralleled with other couples, in and outside of the show, it can’t be a coincidence anymore.
Ikk but as a mileven shipper that'd be heartbreak-but I guess Byler shippers would feel the same way if Mileven was endgame, so nevermind. I guess I'll be writing angst Mileven after S5 and making sad edits haha