He's a very human old ruffian.

I wish I had a real girl friend, but you tactfully freeze off all the girls I like.
It's strange how many people there are whom virtuous folks don't approve." Grace missed the note of appeal in her sister's bitterness.

She did not see the girl as disturbed by doubts and looked in perplexity for a guiding light.

Afterwards, when understanding was too late, Grace partly understood.
"Mr.Cartwright is not a ruffian." she said coldly.
"I suppose you're taking the proper line, and you'd be rather noble, only you're not sincere.

You don't like Cartwright and know he doesn't like you.