Why Kris Jenner Supports Kylie's Relationship With Tyga. Source: 'She Knows She's an Adult Now'

Since she turned 18, Kylie Jenner and her boyfriend Tyga have been muchmore open about their relationship. 

After vacationing together in Mexico and St. Barths, the couple showed off their relationship in Tyga's music video for "Stimulated," which features R-rated lyrics. 

"Kylie is equally as obsessed with Tyga as he is with her," says a source close to Jenner. 

And while the source says mom Kris Jenner "thought the song was a little much," she's also been supportive of the couple's relationship despite the large age difference. 

"There's not much she could say since Kylie is an adult now," says the source. "Kris actually supports their relationship big time." 

Adds the source: "She thinks he is the next hip hop genius of our generation and wants to do anything she can to help him succeed." 

The rapper, 25, has one son, King Cairo Stevenson, 2, with ex Blac Chyna, and will be making appearances on Keeping Up with the Kardashians next season. Over the weekend, he performed at First Slice Media's "World's Largest Pizza Festival" benefiting Model Citizen Fund and partied solo at Cake Nightclub in San Diego.