In a clip from this Sunday's episode of Retaining Up With the Kardashians. the 29 -yr-outdated reality star sits down with momager Kris Jenner, to talk about his strained romantic relationship with his sisters following proposing to Blac Chyna. "I get that you happen to be in this new connection, that's awesome for you," Kris explains. "But it does not indicate that you can't nonetheless be near to all of us – that is how lifestyle performs." Rob then factors out that it is really hard to attain out and have a shut bond with his sisters when they haven't been accepting of his romantic partnership with Chyna. "No, I know, but you all are not like that welcoming of this connection, so you can't assume me to just be like, 'Oh, let us all hang out and everything's cool and fine,'" Rob says. "It truly is not that easy." Kris then shifts the target to Rob's romance with Khloé Kardashian. "I want you and Khloé to be Okay and delighted and connected. It can be your sister," she points out. "You know, she's had a hard 12 months and is going by way of a bad time with all the Lamar [Odom] stuff nonetheless, and she couldn't need to have her loved ones additional than she does now, and that incorporates you." "If you manufactured an work just to kind of mend the feelings that are hurt and just consider to get back on track with all people, it would be so effortless if you would just make the initially move," Kris adds. View the clip above to see who Rob decides to contact initial. Retaining Up With the Kardashians airs Sundays at 9 p.m. ET on E!