General I really don't understand why you want it to be a flop now?
loads of ppl like romantic comedies, I have no interest in them whatsoever, so I don't watch them I don't read posts about them, or comment on them, and doesn't bother me if the new one coming out is good or not.
Surely you should be hoping that you're wrong? I know I am. I want it to be great, no one gains anything by it being bad, the film has had it's issues, but I'm pretty sure no one has gone out of the way to make a bad film, it's just had a few bad decision made along the way which most ppl are hoping they've put right. It's going to make a lot of money, but it will make even more if it's better than ppl are expecting, like Rogue One.
I didn't enjoy Last Jedi, but I want to give this a chance.
At the end of the day, I'd much rather watch a film, and enjoy it when I didn't think I would, rather than being able to go, "ha, I was right, you were wrong, it was rubbish, we've both wasted some time and money on that"
part of me thinks you'll see it in secret, and not tell us that you enjoyed it