
It's probably because Jo isn't a typical ""green flag"". He's a decent character but instead of seeing all green, we are seeing him enter his redness and that makes him unpredictable as he's not from the hard life Ian and tj went through. We don't know anything about Jo but we know enough about Ian and tj. We are basically on our toes with Jo.

I dont understand how people find Jo boring. I think hes the most interesting character because we dont know what to expect with him. I think people also need to realise just because he didnt have a tough life like TJ and Ian, that doesnt mean his story is boring..you dont need to have trauma to be a well written character imo
personally i’ve always liked and preferred guys who are labeled as the ‘red flag’ in the story, as they bring more excitement, uniqueness, and spiciness iykyk. though for some reason i just can’t seem to like tj who is obviously presented as the red flag and dangerous compared to jo here. i don’t know man, even though most of the readers agrees that jo is a boring guy, i am so deeply attracted to him and to his whole personality since he’s turning out to be the most interesting guy out of them for me. well these are all just my opinion. i’m not even rooting for anyone atp. i’m just here for jo (maybe for ian too bc he’s our mc) since i love him individually. if ian and tj ends up together then it’s alright, good for them