heart-to-heart
tete-a-tete
head-to-head
intimate
private
tête-à-tête
close-tiled
eavesdropper
have a word in someone's ear
have a quiet word
homely
intimacy
pillow talk
eavesdropping
privately
oration
boudoir
confide
heart of hearts
under the rose
hail-fellow
in petto
esoteric
inside
secret
intimately
in secret
ultraintimate
tryst
collogue
kissy-kissy
assignation
in camera
lonesomely
sexual relationship
cuddlefest
tete a tete
inwardly
auricular
front room
amicitial
living room
private language
sitting room
parlour
living-room
dirty linen
parlor
private message
connected