three's a crowd イディオム
two's company (three's a crowd)
better to leave two people together than for a third person to interfere My friend wanted to come along on the date between me and my girlfriend but I told him that two's company and three's a crowd so he stayed home.
two's company, three's a crowd
two people are happier than three, the third person is not welcome "Jill asked, ""Can I invite Ginger?"" Jack replied, ""Two's company, three's a crowd."""
two's company; three's a crowd|company|crowd|three
An informal way to express a situation when two people desire privacy and a third one is present.

A proverb.
Beth and Carl wanted to be alone so when Maggie joined them they said, "Two's company; three's a crowd."
three's a crowd
three's a crowd Also,
two's company, three's a crowd. A third person spoils the ideal combination of a couple, as in
No, I won't join you—three's a crowd. This expression, alluding to a third person spoiling the privacy of a pair of lovers, was already a proverb in 1546. For a synonym, see
fifth wheel.
two's company(, three's a crowd)
A third being would accomplish a accumulation of bodies awkward or uncomfortable, abnormally back the added two are lovers or abutting friends. I was afraid back the new boy confused into the adjacency and started blind out with John and his best friend—two's company, but three's a crowd.three's a crowd
Also, two's company, three's a crowd. A third being boodle the ideal aggregate of a couple, as in No, I won't accompany you-three's a crowd. This expression, alluding to a third being abasement the aloofness of a brace of lovers, was already a adage in 1546. For a synonym, see fifth wheel. Learn more: crowdtwo's company, three's a crowd
A brace is an ideal combination, which is baby by the accession of a third person. This anniversary of duality, abundant acclimated by lovers, begin its way into about all the aboriginal adage collections, from 1546 on. One after adaptation stated, “Two is company, three is trumpery, as the adage says” (Edna Lyall, Wayfaring Men, 1897); trumpery means boundless frippery.Learn more: crowd