By now it's pretty much common knowledge that Wiz Khalifa and Amber Rose are no longer an item. After Amber filed for divorce due to the rapper's alleged cheating ways, she hasn't shied away from the spotlight at all.

She's a frequent hot topic on the blog circuit for her racy outfits, but Wiz has opted to keep it lowkey -- for the most part. He's even gone as far as complimenting her after one of her gravity-defying Instagram posts went viral.

But things are beginning to sour between the two and Khalifa doesn't seem too pleased with her recent behavior concerning their son, Sebastian, according to a series of recent tweets. We're reading between the Twitter lines here since he doesn't mention his ex-wife by name, but it's pretty clear who he's referring to.

"a woman who would do something to a kid to spite that kids father is a foul creature," Wiz writes. "Sucks when people try to use that against you but the cool part is figuring out how much self control you have."

"That" is likely his son, which seems to be stuck in the battle between his parents.

While Amber has yet to react on social media with her own side of the story, something tells us this won't be the last we hear of these two.

See 10 Hip-Hop Couples That Didn't Last