If anyone else were to show up, exhausted, bedraggled, and suitcase-laden on House's doorstep, they—probably—would be turned away in a heartbeat. Wilson, however, could do the same and receive a grudging invitation inside—and the fact that the invitation was a regretful one lost all meaning days later when voice-mail was deleted. Even the most acrimonious bastard in the world gets lonely.
House, of course, did not like to, even hated to admit it, so he never did. But it was true just the same, and everybody pretty much understood that.
Because James Wilson was Gregory House's Boswell.