love affair
noun
• a romantic or sexual relationship between two people who are not married to each other.
• "she had an unhappy love affair with a painter"
Similar:
relationship,
affair,
romance,
liaison,
affair of the heart,
intrigue,
fling,
amour,
involvement,
amorous entanglement,
romantic entanglement,
entanglement,
flirtation,
dalliance,
affaire de/du cœur,
carry-on,
