"Er, well, yes," Aziraphale answers. He lets out a quiet, but unmistakably nervous laugh. This is not the easiest conversation for him to have and he's starting to feel a little too warm underneath his clothes. He's also starting to feel a twinge of regret, but he is determined to attempt to continue trying to get himself across.

For the most part, intimacy would be the correct assessment.

It isn't quite the most accurate definition for what he is trying to convey to Crowley in regards to how he feels, but it's still a serviceable conclusion. Intimacy does play a large role in what he desires, but it's certainly more complex than just that. There were plenty of unusual feelings also involved along with it.

Feelings that he could hardly explain in reasonable and logical manner.