Arthur's past with Mary was nothing unfamiliar to you, he hadn't even tried to hide it. He was open with you about it all, from the proposal to the breakup. You knew that the feelings he'd once held for her were long gone, so you didn't worry.

When Arthur came to you, almost a bit nervous, you knew that something was up. He didn't hesitate to tell you about the letter, her request for his help, and, by the end of his ramble, he'd asked you to come along with him. 