Things are seemingly getting serious between Kylie Jenner and her rumored boyfriend Tyga, as they are reportedly spending nights sleeping together.

According to HollywoodLife.com, the inseparable rumored couple has been having sleepovers together at the Young Money artist's mansion in Calabasas, California, to which the reality star has full access anytime.

"She comes and goes as she pleases," a source said. "She has a key to his place and all the security codes needed to get in and out."

However, Jenner and T-Raww reportedl did not officially move in together and do not sleep in the same bed.

"She and Tyga call it her 'emergency mansion,'" the source said, adding it is the "Keeping Up with the Kardashians" star's go-to place, "in case something is going on" at her parents' house.

The source claims Jenner has "her own room and bathroom" in Tyga's house.

"Her mother is fully aware of the arrangement and supports it and trusts that both Tyga and Kylie are telling the truth that no funny business is going on," the source continued.

Meanwhile, the 17-year-old has been surrounded by recent rumors claiming she is expecting her first child with the 25-year-old rapper.

"If Kylie were pregnant, Kim and Khloé would be happy for her and absolutely sad at the same time. All the sisters love children, and they all believe in having one big happy family," another HollywoodLife.com source said. "They're all nurturers and while they certainly wouldn't encourage Kylie to have a baby, they wouldn't ridicule or shun her either. At the end of the day, they're family and family sticks together even in the toughest and stickiest of situations. They just want her to be safe, and to be cautious, and to make the right decisions. Khloé and Kim are more supportive than anything. They would never beat her over the head and say 'don't do this, don't do that.'"