He surprised her with a romantic gesture on Valentine's Day.
lovey-dovey
Frequency:
60
%
They were being all lovey-dovey at the park.
affectionate display
Frequency:
50
%
Their affectionate display of love was heartwarming.
sentimental card
Frequency:
45
%
She cherished the sentimental card he gave her on their anniversary.
Idiomatic Expressions for hearts-and-flowers
Phrase: hearts-and-flowers
Meaning: Overly sentimental or idealistic; excessively sweet or romantic.
Usage: She was expecting a hearts-and-flowers proposal, but he just asked casually over dinner.