Hero's brother makes an almost comment that they're aware that heroine is a gold digger and he doesn't lose a single tooth? That's negative right there. Hero doesn't even properly defend his wife.
Hero knows the whole breakdown is his fault. He is a workaholic, and he hasn't tried and failed to be a present husband, he never even tried it. Heroine finally gave up faking everything including orgasm (which he couldn't even tell because that's how much attention he pays to her).
He almost laughs at her when she talks about love. His response was some thing along the line "oh you're taking about love, i thought this was serious" and he confirmed in the next sentence he doesn't believe in it, he only said ILY (probably for the first time) at the verge of divorce, because he likes to win.
He is such an arrogant and abusive character, the moment he found a small thing to blame his wife on, which he by the way had no right for, he turned the whole table, and placed the whole blame on her and suddenly she's no longer good enough for him. If they were in their bedroom, he'd have kicked her out of the bedroom physically.
Also, heroine earlier pointed out that he always measure HOW much work he has to put in to win something, if it doesn't seem profitable, he abandons it. That's exactly what he did. He had to suddenly spend a romantic dinner with the wife (one he almost paid for), he had to make effort, he's already having to make conversation and small talk, and grovel, this is so beneath him, and she has pointed out his inadequacy in bedroom. He is never going to cut back hours at work, both his family and wife is 2nd best to his career and job, and heroine is demanding time for that. So let's just illogically blame her for not loving me when we got married, even though that's EXACTLY what i did, and I don't believe in love, but now I'll play the victim and I'll just cut my losses and throw her out of my life.
He asked heroine why she married him, when they TOGETHER made an informed decision that she has no money, or prospect, so he'll marry her and they'll have a partnership. She just didn't realise the partnership will turn out her acting like a trophy wife like an employee. She was the only one with logic here. He wanted to divorce her because she faked being happy for money. She literally explained the whole thing to him the other day. She didn't think of love when they got married, she loved him when the kids were born, hell, she even loved him last week, but not right now, whereas he admitted HE never was IN LOVE with her, or even loved her in that way. And suddenly he has always loved her and SHOWED it to her. in what way? he couldn't even show it in bed, his dick had a 3 minute expiration timeframe! the author lost me at that point. Because it was the BIGGEST lie throughout the whole book, and probably in the MC's relationship.
He probably either wanted to cut her out because it was too much work for him, or cut her down so he has leverage in the marriage if they reconcile.
This guy was worse than alpha heroes. At least you know they're assholes. This one is claiming he cares and loves, and looking for every occasion to find a weakness so the table is turned and he gets the upperhand, and when he couldn't do with the reality, he did that with a superficial reason.
His family has never cared for his wide, yet not only was he unaware of it, when he was made aware of it, he did nothing to protect his wife's honour.
The heroine was an idiot and not very likeable person, but hero is THE worst.