Although it's no secret that the pair have been dating for months, they have not been seen in any public displays of affection - until now that is!
On Sunday (30 August), 25-year-old Tyga released the sexy video for his new single '$timulated' and it features LOTS of his hot girlfriend.
In the three minute film, rapper Tyga and reality TV star Kylie, 18, can be seen kissing passionately on the balcony of a swanky apartment.
The couple are also seen staring tenderly into each other's eyes during the song, which is thought to have been written about Kylie.
Although the lyrics aren't exactly, ahem, romantic (in fact they are borderline X-rated), the chemistry between Kylie and Tyga is plain to see.
At one point, Tyga - aka T-Raww - raps: "They say she's young, I should have waited."
And the rest is a bit too explicit to print here...
The couple kept us guessing about their relationship at first, but now it seems they want the world to know about them.
Reports suggest this is because Kylie turned 18 earlier this month. Their relationship previously attracted criticism because Kylie was under the legal age of consent when they are rumoured to have got together.
'$timulated' is the lead track from Tyga's new mixtape Fuk Wat They Talkin Bout.
Kylie's sister Kim Kardashian also made waves when she appeared topless in Kanye West's video to 'Bound 2' in November, 2013.
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