English ⇄ Russian

throuple n stresses
gen.	любовная троица (Three partners in a romantic or sexual relationship; ménage à trois: The throuple walked into the restaurant on Valentines Day. UD wiktionary.org Alexander Demidov); секс втроём (Taras); любовь на троих (a threelationship; a relationship with three partners Taras)
inf.	"шведская семья" (Are you a throuple? Taras)
sl., teen.	тройник (MichaelBurov)