In Los Angeles last night, the pair were spotted getting very cosy in the back of his car outside a recording studio.
TMZ reports the rapper showed up at the music studio where Ariana was recording.
In the pics, you can see Ariana sitting in the car with her dog Myron.
It comes as break up rumours between Sean and girlfriend Jhene Aiko have been swirling for months, but with think this reunion confirms it.
While Ariana has been very clear that she's not ready for any form of relationship, she did write a secret message to Sean in her film clip for "thank u, next."
When she sings his part of the song, she has written in her 'Burn Book' "(Could still get it)". Well, that's that then.
The couple dated from August 2014 to April 2015. When they broke up, the pair's PR team released a joint statement, revealing they "care deeply for each other and remain close friends."
What do you guys think of this reunion???
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