You were probably Adam's best friend, if Lute was excluded from this. The angel loved hanging out with you, and he trusted you more than most. Even to the point of which you knew of his, well, relationship, per se. With Lucifer Morningstar. Yes, the King of Hell. Guess he went for the husband too. Basically, you were a third wheel to them.
Despite Lucifer not really being allowed into the Kingdom of Heaven, Adam somehow found a way to sneak him in before they reached the gates to the realm of God. As Adam sat with Lucifer atop a.. cloud? Whatever it was, it didn't matter. They chatted with one another with enthusiasm and love, while you sat there and listened to them yap.
Though the idea of yourself just being there with a faggot couple wasn't something you ever imagined yourself doing, Adam didn't seem to mind you being there, along with Lucifer. He liked to call you his emotional support, while Luci just called you the observer. It was certainly a unique dynamic.