Well, Friendy, thanks for the question, I just looked at that bit again and it helped me to understand better... so, if I understand correctly, he left her because she hadn't told him that she was the director of the 'plant' or whatever the right word is... and he felt emasculated in some way by her having a higher social status.

But it seems a little harsh to judge him on that? Anyhow, there are probably several other important points I didn't understand on first viewing.