He's selfish and lacks empathy. He doesn't understand the reason she was upset about being "neglected" by him was that for the last 10 years her life was controlled by her father who sold her to her husband due to his own financial failures.
Money that was supposed to be for her own personal allowance that the husband sent, her father leeched and stole for his own use - by "investing" into his own failed business ventures. While making her father made the FL sacrifice her opportunities either by going to University (she excelled academically) or becoming independent by using her to be a carer for her sick Grandmother so her father didn't have to pay (i.e use her money that he was already stealing) to pay for a carer.
The only person who supported her was the Sensei during that dark time in her life
Really creepy how possessive the guy is of his 'wife'. He just met her so it isn't love that makes him jealous, it really just feels like he doesn't want her to be with the other guy because she's his possession. He cares more about her title as his wife than her actual feelings and that is really unromantic.