gush
Early in their relationship they were so gushy about each other that they couldn't talk about anything else.
Most of his songs are gushy ballads about heartache and true love.
Her guilty pleasure every December is watching Christmas movies featuring gushy love stories.

SMART Vocabulary: related words and phrases

Expressing and showing feelings
abandon
affect
affective
be in/get into a stateidiom
beat your breast/chestidiom
crimson
feelingly
fling
fling up your handsidiom
flush
freak
freak (someone) out
game face
pale
roar
roar with something
sook
spill
spill out
sulk

You can also find related words, phrases, and synonyms in the topics:

Sentimental and over-emotional