Disgraceful
She was terribly romantic, and she had her way of touching his heart.
With each passing day, he found that she wasn't a cunning woman like he imagined at first. He recalled his mockery and cruelty to her in the past, and felt a sudden strong feeling of remorse, imagining how bad he had hurt her. She didn't deserve all the pain and suffering he had caused her. He cast his eyes down on the glossed black leather of his boot, his mouth slightly opened as he struggled to utter a word. He took a breath in a quiet sigh instead, before finally said.
"I should apologize for the misery I caused you."