The heroine is a twit, but worse, this one is boring.
The hero here has fidelity issues. Yes, that’s the red flag. How well you deal with that will determine your enjoyment of this one.
This one seems okay, then it turns ghoulish fast. I actually like this.
Things are going so well until the two main characters mutate into things that need killing.
The author has merely replaced her shagfest with a hatefest. Ugh.