Iggy Azalea has thanked her fiance Nick Young's teammate for a video allegedly showing her partner admitting to cheating.

Basketball player D'Angelo Russell reportedly filmed a video of his Los Angeles Lakers teammate Nick confessing to cheating on the Fancy rapper with a 19-year-old girl at a nightclub.

Nick, who does not seem aware that he was being recorded, also told D'Angelo he would not hook up with model Amber Rose "as she knows my girl."

The footage leaked on the Internet last week (ends27Mar16) and Iggy has now thanked D'Angelo for taking the video, but it is unclear if she is being sincere. She tweeted, "hmmm i see D Angelo Russell is trending... I actually liked his film. Thanks bro."

The sports star was trending on Twitter amid reports he was being isolated by his team for taking the video.

After the clip went public, Nick cryptically wrote on Twitter, "I dnt play them games (sic)" and told a user, "You dnt wanna be me in a relationship (sic)."

The supposed confession came just days after Nick denied claims he made obscene gestures at two women while sitting in traffic in Los Angeles with his teammate Jordan Clarkson.

It is not the first time Nick, 30, has been hit with cheating allegations. Iggy defended him over the rumours in a radio interview on the same day the video was leaked, insisting she believes in him.

"Hey, that's part of being a basketball player. There's always something," she said on 92.3 AMP Radio's Shoboy In the Morning. "I believe my man, and Nick is a super nice guy. It's just not really the kind of thing he would do."

Iggy, 25, got engaged to Nick in June, 2015 and they were intending to get married this year (16), but their big day was recently postponed so she can embark on a tour. She already has the date and location set, but is keeping them secret.