"Blac Chyna genuinely makes him happy and that is a huge stride for Rob," says a Kardashian source

By Melody Chiu
Updated March 24, 2016 04:30 PM
Credit: AKM-GSI

brightcove.createExperiences(); When Rob Kardashian and Blac Chyna first revealed their relationship, the reality star’s family was shocked and angry. But now his famous sisters and mom have come around and are even happy for the couple.

“Kris is actually super stoked on them being together now,” a Kardashian source tells PEOPLE. “She feels like Rob was pulled out of his depression phase because of her.”

According to the source, Rob is “smiling, laughing and really feeling good about life for the first time in a long time,” which is a “huge stride” for the once-reclusive reality star.

“Knowing and seeing that makes Kris support their relationship,” says the source.

And though the duo initially hooked up “purely to get attention,” according to another insider, Blac Chyna “genuinely makes him happy” now.

Adds the insider: “The girls of course would rather their brother date someone else, but just want him to be happy so they’re accepting it.”