affair(RELATIONSHIP)
I was devastated when I discovered my partner was having an affair.
The couple acknowledged that they had both had affairs.
He had numerous affairs during his long marriage.
It's hard to know how many people have affairs at work.
SMART Vocabulary: related words and phrases Relationships: infidelity
adulterer
adulterous
adultery
affair
bigamous
bigamously
cuckold
extramarital
extramarital affair
faithless
faithlessly
infidelity
mess around with something
on the sideidiom
play around
roam
screw
unfaithful
unfaithfulness
wander
You can also find related words, phrases, and synonyms in the topics:
Marriage, cohabitation & other relationships