Ariana Grande and Big Sean Reunite at L.A.

EXCLUSIVE

Ariana Grande and Big Sean had their #ThrowbackThursday started a little earlier … with a hug session in his car.

The ex were found in Sean's car Wednesday night in front of a recording studio in Los Angeles. For the record, Ariana was at the studio first, then Big Sean appeared after … and she went out for the meeting.

Ariana showed one of her mutts to her ex-bae … an excellent excuse to get closer. BTW, they left together in his turn.

You may remember … Ariana and Big Sean were together for almost a year before ending the relationship in April 2015. She claimed that the rapper had embarrassed her with "billions of dollars p *** y"lyrical.

They both finally moved – Big Sean with Jhene Aiko … but it seems like the old flames are dying.

Fast forward to last winter … Ariana fell his song "Thank U, Next". The first lyrics go: "I thought I would end up with Sean but he was not a match."

But, in the music video, her "Burn Book" shows that she's still struggling with Sean … writing Sean's "so cute, so nice" and "(could still get it ). "

And almost 3 months later, it seems that Sean understood it.