Ariana Grande credits boyfriend Ethan Slater for taking adorable pictures of the family.Ethan Slater was one of the attendees at girlfriend Ariana Grande’s special screening of the most anticipated and talked about musical, Wicked. On November 25th, the 31-year-old singer hosted a special... Ariana Grande credits boyfriend Ethan Slater for taking adorable pictures of the family.Ethan Slater was one of the attendees at girlfriend Ariana Grande’s special screening of the most anticipated and talked about musical, Wicked. On November 25th, the 31-year-old singer hosted a special...