Anthony Pettis Says He's Down To Smoke Weed W/ Nate Diaz After They Fight

Anthony Pettis and Nate Diaz have beef... BUT, AP says that doesn't mean he won't spark a J with Diaz after they fight.

Their relationship is icy -- there's been bad blood between the fighters for awhile -- and they're gonna duke it out Saturday night at UFC 241.

"We're not cool. Me and Nate are not cool," Pettis tells TMZ Sports ... "I mean we never had any kind of relationship other than him throwing his middle fingers up at me. So, you do that to me, then I'm assuming we have a problem."

So, yeah, they ain't friends ... which made Pettis' answer to, "Would you smoke with Nate after the fight?" surprising.

"F**k yeah. Hell yeah. Honestly after this fight is done, there's no beef," he says, "I'm gonna settle it in the Octagon, and if we spark one up, we spark one up."

It could happen.

Diaz isn't shy about his love for weed, and even lit up a joint (it's unclear if it was marijuana or CBD) at his open workout on Wednesday.

Pettis loved it.

"That's dope, that's dope. Hell yeah. I support that. I smoke weed too."