Zac and Vanessa split over argument about who has better hair

Ok I can't confirm that, you know, because I made it up. But if I had to bet money on the reason these two ended their 3-year relationship, I would bet my life savings on that headline. All 75 dollars of it.

Anyway, their reps say it was amicable; they remain friends... a bunch of other crap that celebrity reps always say.

Let's hope the real reason comes out sooner than later. Because I know I'm not the only one looking at his hair and thinking how awkward it must have been for Vanessa to walk in on him playing tummy sticks with Taylor Lautner.