ace
amigo
associate
bedfellow
bedmate
birthmate
bosom buddy
buddy
bunkie
bunkmate
butty
camarade
chamberfellow
chum
classmate
clubmate
colleague
comate
companion
company
compeer
comrade
confrere
consociate
consort
copartner
copemate
copesmate
couchmate
cradlemate
crony
cupmate
fellow
fellow student
general partner
girl friend
gossip
jailmate
mate
messmate
old crony
pal
pard
pardner
partner
pewmate
playfellow
playmate
roommate
schoolfellow
cook-housekeeper
fiance
grandparent
mentor
nemesis
protégé
schoolmate
sweetheart