Affair of the heart and Menage a trois

Menage a trois and affair of the heart are semantically related. In some cases you can use "Menage a trois" instead a noun phrase "Affair of the heart".

Menage a trois noun - Household for three; an arrangement where a married couple and a lover of one of them live together while sharing sexual relations.

Affair of the heart and menage a trois are semantically related. Sometimes you can use "Affair of the heart" instead a noun phrase "Menage a trois".