“Keeping Up With the Kardashians” star Kylie Jenner is supposedly “livid” brother Rob is dating Blac Chyna, but Tyga doesn’t seem to mind. When the California rapper was asked about the new relationship, his response was surprisingly cavalier.

“Everybody deserves to be happy,” he reportedly said about the mother of his son, King Cairo. Blac Chyna, 27, and Jenner, 18, have bad blood since Tyga dumped his ex for the “KUWTK” star when she was 17 years old. Of course, the two didn’t make their relationship official until she turned the legal age in August.

Before that, Blac Chyna’s best friend, Amber Rose, slammed Tyga during an interview with Power 105.1’s The Breakfast Club in February 2015. "Kylie's a baby," she said. "She needs to go to bed at 7 o'clock and relax. It's ridiculous. Tyga should be ashamed of himself. That's how I feel, for sure. He has a beautiful woman and a baby that he left for a 16-year-old who just turned 17."

Rob can apparently care less about the feud between his sister and new girlfriend. He even brought her home to meet his mother, Kris Jenner, and the rest of the family, Hollywood Life wrote Thursday. The couple was photographed in a vehicle together, presumably going to the gym, but Hollywood Life wrote it was actually to go see Jenner.

The family probably wasn’t too receptive to her. Even though Khloé Kardashian denied a recent tweet was about her brother, it seemed like a bitter warning. “You can do anything. But never go against the family,” she wrote. She has since reportedly kicked him out of her house.

For all the latest Kardashian-Jenner drama, check out Season 11 of “KUWTK” on E! every Sunday at 9 p.m. EST.

Follow me on Twitter @mariamzzarella