Sweet Nothings
To speak "sweet nothings" is a form of flirting. 
Sweet Nothings or Sweet Nothing may refer to:

Dramatic arts
Sweet Nothing (film), a 1995 film with Michael Imperioli and Mira Sorvino
Sweet Nothings, a 2010 adaptation by David Harrower of Liebelei (play) by Arthur Schnitzler (1894)

Music
Sweet Nothings, an all-female group at Exeter University

Albums
Sweet Nothing (album), a 2003 album by Tex Perkins and the Dark Horses
Sweet Nothing, a 1999 album by Sonic's Rendezvous Band
Sweet Nothings (album), a 2014 album by Dog Fashion Disco
Sweet Nothings, a 2013 EP by Plini

Songs
"Sweet Nothin's", a 1959 song by Brenda Lee
"Sweet Nothing", a 1985 single by Working Week
"Sweet Nothing (Calvin Harris song)", a 2012 song by Calvin Harris featuring Florence Welch
"Sweet Nothing" (Gabrielle Aplin song), 2015
"Sweet Nothing" (Taylor Swift song), 2022
"Sweet Nothings", a 1975 song by Loudon Wainwright III from Unrequited
"Sweet Nothings", a 2014 song by Neck Deep from  Wishful Thinking
"Oh! Sweet Nuthin'", a 1970 song by the Velvet Underground
"Sweet Nothing's", a 2017 song by Ai from Wa to Yo