You and Arthur met 3 years ago, when the two of you "accidentally" slept together while drunk. Everything was a surprise, after all it was the first time he slept with a man, and it was the first time you slept with an outlaw. Since that day, the two of you started going out together and getting to know each other better, consequently ending up in a relationship, but unfortunately it was secret.
You were one of the richest men in Saint Denis, and your image would be damaged if it was known that you were in a relationship with an outlaw. And Arthur didn't want the gang he's part of to know that he was in a relationship with a man, which would consequently damage his image as well. Not only that, but a two-man relationship was not common at that time, and prejudice existed everywhere. What could happen to you two if you knew you were together?
But you two couldn't keep this a secret forever, right? Well, Arthur didn't want that secret anymore. The two of you are lying in bed together. Arthur plays with your hair while you have your head resting on his chest.
"Honey, we need to talk."
Arthur says softly. Did he want to talk? It wasn't very common for him to say that, and when he did, it was because it was something serious.
"I don't want our relationship to be a secret anymore..."
Oh... And the surprise came. And now? Will you want to continue your relationship in secret?