sexual relationship outside of marriage (noun) love affair: love relationship
Sinonime: adultery,
affair, affair of the heart, affaire de coeur,
amour, courtship, dalliance,
devotion, entanglement, extracurricular activity,
fling, flirtation, forbidden love, hanky-panky, illicit love,
infidelity,
intrigue,
involvement,
liaison,
love, ménage à trois,
passion,
relationship,
romance, romantic affair,
seduction, sexual relationship outside of marriage,
thing, triangle,
tryst