Nick Diaz 'bullied' Georges St. Pierre into UFC 158 title shot; 'chased' and 'yelled' at 'Rush' in hotel following UFC 137

For those of you that have always wondered what exactly Nick Diaz did that made UFC Welterweight Champion Georges St. Pierre want to fight him so badly, you've finally got your answer.

Sure, the post-fight call-out after his UFC 137 main event victory over B.J. Penn was nice and all, but Diaz did much, much worse things to get under GSP's skin after everyone had gone back to the fighter hotel in Las Vegas.

UFC President Dana White spilled the beans earlier today during an appearance on the Jim Rome Show (where he also discussed Diaz's recent no-show shenanigans).

"Nobody has talked about this, I haven't said anything about it, but at one of the fights, the one where he really starts calling Georges out, he was chasing Georges around the hotel and like yelling at him and stuff. Georges thought he was going to try to fight him in the hotel. He was just waiting for the elevator doors to open and see Nick Diaz."

According to White, St. Pierre views Diaz as a bully, and if you know "Rush's" history with bullying, that's a really big deal to him.

"Like at the last fight where he said all that stuff after his last fight when he said all that stuff about Georges, he was really messing with Georges bad at the fight, like trying to fight him at the hotel. That really pissed Georges off. I don't think that would ever happen, but Georges St-Pierre felt like it was. Georges has said publicly many times when he was younger he used to get bullied. That's what got him into martial arts. He just has this crazy thing about bullies and he thinks Nick Diaz is a bully."

We've all heard the jokes about St. Pierre's "dark side," but if what White revealed is true, GSP might be a completely different animal when we see him in the Octagon on Saturday night (March 16, 2013).

"Georges St-Pierre I talked to him last week, he said 'Dana, you have no idea what I'm going to do to this kid, I wanna make him retire'"

If Diaz had scrapped with St. Pierre, it wouldn't be the first time he's gotten into a fight after competing inside the Octagon. Who can forget his notorious hospital brawl with Joe Riggs following UFC 57?

Perhaps GSP's ire is deserved after all.