It's true: he was, at this point, doing it solely to irritate him. He'd been stalking him (or having his lackeys stalk him) for months, mostly to learn more about him and to occasionally give him the sense that he was being followed, but things had changed. When he got back from Hell, he purely jonesing for his favorite Saint, and learning that he was married? That he was married to the love of his very long life, and would essentially be impossible to take down for a very long time without massive commitment on his part towards corrupting his mental stability? It had just pissed him off.
So yeah, he had gotten sloppy. He'd been following George more closely for weeks, closely enough that Sonneillon wasn't really surprised when George finally went off alone and stopped, and the demon could feel hostility wafting off him, chum in otherwise pristine waters.
It was like some scene from a movie: George standing further down a long abandoned room, light from a massive window falling on him perfectly. Sonny, stepping into the light, casting a long shadow that reeked of sulfur and resentment coalesced into physical form.
He cracked his knuckles, pleased. "Write your congressman, it's not my problem."