Given the rumors surrounding Apple and Google lately, and the iPhone and Microsoft Bing, it's no wonder Mobile World Congress 2010 has raised both topics again, earning a smile from Steve Ballmer, and yet another "stable" comment from Google.

First up, Reuters has comments from Vic Gundotra, Google mobile engineering lead:

"Apple is a very close and valuable partner and we're very excited about the relationship we have with them today. We have no reason to believe that's going to change." [...] "We don't want to comment on those rumours. We think that relationship is stable."

"Stable" being the same word repeated twice by Google CEO Eric Schmidt recently when he was similarly asked about the state of the Apple/Google relationship.

Microsoft CEO, Steve Ballmer played things more coyly according to Reuters:

When asked about the reports, Ballmer said "I wouldn't comment either way," but smiled, and repeated the phrase when the reporter remarked that Ballmer looked happy.

This once again highlights the broad but internally conflicted scope of Microsoft and Google's businesses. Ballmer and Schmidt no doubt want WinPho7s and Android to compete well against the iPhone, but they both also want the revenue from iPhone search traffic -- something Google reportedly pays $100 million a year for already.