couple
duo
twosome
duet
⠞⠛⠗
hand in hand
twain
double
bind
2gether
in tandem
one-to-one
romance
love affair
bodkinwise
bodkin
item
pair
lovebird
mutual
two-time
duad
jodi
Siamese twin
intergender
thing
dyad
stead
conjunctional
baby
Tweedledum and Tweedledee
pardner
girl
side by side
lady friend
girlfriend
pair off
couply
taken
double-handed
noncouple
head-to-head
interpartner
zyg-
Spiderman kiss
either
zygo-
inter-
go hand in hand
relo
cosentient
interpersonal
alongside
rematchmaker
squeeze
divide
in concert
service
serve
bosom
doublet
tooth-to-jowl
interassociated
syl-
manfriend
alter ego
May-September romance
make beautiful music together
syn-
break
hold hands
dioecious
double date
coupling
interrepellent
abreast
like two peas in a pod
cognation
one-on-one
biandry
cohabitant
cohabitee
smitten kitten
one-night stand
coresident
interassociate
intercouple
liaison
Tweedledee and Tweedledum
cuddlefest
cross-handed
amour