When ET spoke with Kris earlier this month, she admitted that she's out of the loop about her son's new girlfriend
. "I don't really know much about their relationship. I think they're definitely friends, and they seem great," the 60-year-old momager said. "Rob has been in a really good place for a while. He's on it right now, and he's engaged [in life]. I love seeing him happy about what he's doing."