Yes. He had tickets. But he did not have to travel one mile with her. Yet he did. Stopping at places on the List, taking pics, sharing hotel rooms on the road. #sex
She knew people she could ride with. He could have arranged for her a ride or insisted she make other arrangements so as to not send any mixed signals to Jodi or to his friends. But he didn't. He freely chose to travel with her. No doubt she tempted him about the "benefits" of taking her along on the road and played up the "poor Jodi needs a ride" angle but he could have stood strong and said, Here's your ticket, see you there. The addiction was strong.
Addiction? Nah. Maybe he was just a really nice guy who had promised to take her months ago, when she seemed less psycho, changed his mind about wanting her along but didn't throw her to the curb because he was a nice guy AND because he didn't want to deal with the extreme drama that would follow changing plans to exclude her altogether. Yikes. I can only imagine what of his she'd have stolen or destroyed if he'd done that.
At least he held the line on not taking her to the ED banquet, not for lack of her trying every means to manipulate him into that.