VIDEO : Did Ariana Grande Use Justin Bieber to Hurt Big Sean?

Earlier this week, Big Sean and Ariana Grande confirmed that they are no longer dating , and their reps claim the break up was largely due to their upcoming tour schedules conflicting. But let's be real, is Justin Bieber to blame here? During an on-stage performance earlier this month, Ariana brought out the Biebs who made an aggressive , come-from-behind embrace against his duet partner. TMZ reports that Ariana orchestrated the stunt to get back at Big Sean.??