1
general::
Phrase(s): sweet nothings
affectionate but unimportant or meaningless words spoken to a loved one. • Jack was whispering sweet nothings in Joan’s ear when they were dancing. • The two lovers sat in the cinema exchanging sweet nothings.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Endearments, often whispered, between lovers. For example, They sat in a corner all evening, whispering sweet nothings. [c. 1900] Also see SWEET TALK.
American Heritage Idioms