The way Crowley reacted helped to embolden Aziraphale, though he didn't want to push too far, too quickly. There was a small, insecure voice inside Aziraphale's mind that would sometimes arise. It told him that since there wasn't anything really holding them back from progressing to having a deeper relationship with one another, what if Crowley would suddenly grow bored with him after reaching the goal he'd been pursuing for so many years>? Aziraphale tried to dismiss these insecurities. Foolish, really, given all their experience together. Even so... there was no harm in playing hard to get, was there? Flirting could be fun, too, right?
Smoothing out the lapels, it was still wonderful to be able to do something as simple as casually touch him. "It seems a bit outdated now. Our arrangement, that is. Given our circumstances." He flashed his eyelashes up at Crowley. "What are your thoughts on a new arrangement?"