Covering Up a Possible Cover up

There's so much information out there, it's really hard to know who or what to believe.  He says this, she says that, and someone else says this, that and the other.  But which one can you trust?
When Adam Leber calls bullshit on a report that Jason Trawick proposed to Britney Spears is he more believable than the magazine(s) that reported the story?  Technically, he's supposed to call bullshit on something like that.  If Britney and Jason get engaged, she's going to want to make the announcement, not let some magazine beat her to the punch.  If the magazine(s) beat her to the punch, what other choice is there but to call those reports lies?
On the other hand, can you really believe magazines that constantly post either knowingly or unknowingly false information?  They're really not reliable.  These stories are posted, not for their accuracy, but to entice people to buy the magazines.  A cover story about Britney and Jason getting married could be very enticing.
So, both sides have reasons to lie: either for personal gain or protection.  How, then, do you know who to believe?
You may come to the conclusion that magazines lie all the time and managers/publicists don't.  That's a misinformed conclusion, because magazines don't lie all the time and managers/publicists do, in fact, lie sometimes.  Concluding that magazines lie more than managers/publicists, etc, so always believe the manger/publicist over the magazine is another misinformed conclusion.  While technically true, if you subscribe to that theory, you ignore those times when the magazine got the story right and the manager/publicist lied to cover it up.
The only way to truly go about it is to simply believe no one.  Look at the facts and come up with your own conclusion.  If there are no facts, necessarily, then go by what you know.  Use history as a guideline.  Don't just assume that person a is right and person b is wrong.  Blindly following that which you're not sure of only gets you lost.
In the grand scheme of things, it's probably no ones business, anyway.  Magazines will continue to publish stories (real or imaged) that will entice buyers, and managers/publicists will continue to say whatever it takes to make their client look good.