Ariana Grande and Big Sean have reunited , nearly four years after their split .
The former couple were spotted put and about after leaving a studio in L.A.
Big Sean and Ariana dated from 2014 to 2015.
She moved on to the late Mac Miller and most recently , Pete Davidson whole she split from late last year .
On his.part, Big Sean moved on to Jhene Aiko.
They reportedly split in 2018.