Final answer:
The provided text does not contain information about a character named Marty or his actions, but discusses a character named Dexter and his emotional journey involving Judy and Irene, indicating the need for a question specific to the content of the text.
Step-by-step explanation:
The passage you've provided appears to be from a work of literary fiction, describing a character named Dexter and his emotional response to personal and historical events. Dexter does not exhibit regret for his past actions involving Judy and Irene, despite the emotional pain these have caused. His motivations seem internal, as he is depicted as being indifference towards popular opinion and is primarily driven by his internal feelings of love and his reactions to the changes in his life, like the onset of war. There is no mention of a character named Marty in the provided text. Therefore, the original question about why Marty did something cannot be directly answered from this text. It's important to ensure the questions about a text are directed towards the characters and events within that specific text.