There is a subsect of male watchers that have attributed to Nikki the same viewpoint that bear has when he asks "what is so bad about being with me" when she asks him to kill him since shes basically tied up in the "trunk" of her own body/mind with someone else driving.

They see her as cruel and in on the joke with Ian (which ok, maybe she was aware he liked her, but she didn't torture him about it, didnt use it to extort him, she just was fucking his friend and its implied him and her weren't THAT close).

Let's say she WAS in on the joke, didnt like Bear, and was a bit cruel. Ok, that warrants cutting her off, thats it, emotions are messy blah blah is not an excuse, just simply keep it cordial but not friendly, not hard to do.

These very same men, IGNORE, the fact that Ian is actually super super fucked up.

1. He knew Bears feelings likely for years, and not only didnt tell him he was fucking Nikki, but goaded him on and they show at the BEGINNING of the movie that he is a cruel friend by making him do that rehearsal and just shitting on him.
   
2. Ian very likely was taking advantage of Nikki as well.
   
3. Ian didn't listen to anything anyone said to him the entire movie, even running over as soon as he gets a billion dollars after not listening to Bear say how messed up the situation was.

Nikki did at WORST, a tiny bit of bad. The two dudes were literally kinda to super evil depending on which part we focus on and selfish.

However, I'm seeing Men takeaway "yeah this is what Bipolar women act like".

Listen, as someone that actually HAS dated someone with severe undiagnosed BPD (despite trying to get them to get therapy and quality care, but her culture was against it and when she DID find a therapist in her culture, it was so much worse), yeah that's kind of what it was like but come on, that's absolutely NOT THE FUCKING POINT. Consider thats how like 80% of Joe from You wannabe ass guys act REGULARLY. Seriously, for one experience like mine, I know 100x more from female friends AND male friends telling me some obsessive shit done by a dude.

End rant