sweet nothings

US /ˈswiːt ˈnʌθɪŋz/
UK /ˈswiːt ˈnʌθɪŋz/
"sweet nothings" picture
1.

romantic or affectionate words, often insincere or meaningless, whispered to a lover

:
He whispered sweet nothings into her ear, making her blush.
Their conversation was mostly sweet nothings and laughter.