Who does romeo go to immediately after leaving juliet's side?

Romeo and Juliet meet four times in the play: at Capulet's party, in Juliet's backyard, at Friar Lawrence's cell, and in Juliet's bedroom.

After meeting Juliet at the party, Romeo leaves alone, ditching his friends, and climbs into Juliet's backyard.

After the Balcony Scene, he goes to Friar Lawrence to arrange the wedding.

After the wedding he goes and meets Mercutio (and, unexpectedly, Tybalt)

After the wedding night, he leaves Verona and goes to Mantua.