James, 26, starred in reality series Bad Girls Club but according to the insider has matured since her time on the show and "will be a good fixture in Rob’s life should this continue".
As reports of Kardashian's new relationship surface, the 30-year-old has deleted an Instagram tribute to ex Blac Chyna which was shared on May 30.
The on and off couple welcomed their daughter Dream in November last year.
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