A greeting used by River Song (Melody Pond) and the Doctor in Doctor Who. Hello Sweetie is generally directed to mostly the Doctor and sometime River Song. Although occasionally it can be used as a form of surprise.
River Song: *Sees The Doctor* Hello Sweetie.
Doctor: Yes, hello River. What have you been up to?
River: Spoilers.
Doctor: Yes, hello River. What have you been up to?
River: Spoilers.
by Dalekwithafez July 29, 2017