READ MORE: Ariana Grande's boyfriend Ethan Slater discusses their romance after leaving mother of his baby Ethan, meanwhile, ...

Ariana Grande and Ethan Slater made a rare joint appearance ... moving both herself and their then two-month-old baby boy to ...

Ariana Grande reunited with her boyfriend Ethan Slater at the star-studded National ... She wrote about moving both herself and her then two-month-old baby boy to London while Ethan filmed ...