Tyga is "devastated" after being dumped by Kylie Jenner.

Tyga and Kylie Jenner

Tyga and Kylie Jenner

The 26-year-old rapper is determined to win back the 18-year-old reality TV star after she abruptly ended their relationship on his birthday on Thursday (19.11.15) upon returning from a promotional trip to Australia.

A source close to the 'Stimulated' hitmaker said: "They are on a break. They were just a week or so ago talking about 'ever after' and things got messy this past week. Kylie wants time to just be by her self and do her. Tyga is not giving up as that's his one and only lady."

It was previously reported the 'Keeping Up with the Kardashians' beauty initiated the break up because of "something Tyga did."

But the insider told E! News he denies "doing anything" at all and "he's devastated."

Kylie was noticeably absent from Tyga's birthday celebrations at the Nice Guy in West Hollywood and 1 Oak nightclub on Thursday.

The teenager, who sparked controversy when she started dating the rapper last year when she was 17, recently admitted she was reluctant to discuss their relationship in case they ever broke up.

She said: "I don't think I will ever be super-public about my relationships.

"I do think that if you let people in too deep, it gets hard - your fans get too invested, and then they know when you break up and make up. I don't want people to know every time we fight or break up, so I'd rather keep some things private."

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