The rapper and the reality star have been a rumored couple for quite some time now, but given that there was a lot of controversy about their age difference and the fact that Kylie was only 17, they kept things pretty low-key.
Is this sexy snap Tyga's way of confirming their relationship or is he just really excited about her birthday? Who knows. What we DO know is that he gave her a pretty sweet gift on Sunday night after her big b-day bash.
While Kylie was spotted driving a Mercedes G-Wagon that Tyga had previously given to his ex Blac Chyna on Friday night and that seemed a little awkward if that was his gift for her, Tyga flipped the script on everyone when he gave Kylie a brand new Ferrari on Sunday night.
In the video above, fans can be heard asking Kylie to give Tyga a kiss, now that she's 18 and she can date whoever she wants, but the reality star opted for a big hug instead.
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Gallery | Kylie Jenner and Tyga's Cutest Moments