James Harden's new girlfriend Amber Rose has started quite the flame war on Twitter this week.

James Harden is Amber Rose's Valentine

It all started when Rose dissed rapper Tyga in a recent radio interview, suggesting the hip hop artist had committed statutory rape with celebrity Kylie Jenner (who's only 17).

Khloe Kardashian took to Twitter to defend her half-sister, dismissing Rose as nothing more than an ex-stripper with beef. Rose fired back by pointing out the irony of being insulted for her stripping past when Khloe's sister Kim is famous for a high profile sex tape. Rose also quite provacatively suggested that Khloe and Kim's real dad was, get this, O.J. Simpson.

Yikes.

Things got so hot, that Rose's former mother-in-law, Peechie Wimbush, felt the need to knock her down with a few choice tweets.

"Only a dumb a-- only child would try it with a gang of sisters," she wrote.

She also RT'd a subtweet criticizing Rose for her promiscuity from her son Wiz Khalifa, who was married and had a son with her.

James Harden Parties With Amber Rose in Vegas

This controversy doesn't seem to be affecting Rose and Harden's relationship, however.

I now have a very special friendship with James Harden," Rose said in an interview recently, via Celebeat.com. He'll be my Valentine - if he acts rights. But I'm not going to confirm anything because it's only been a month. He's an amazing guy though."