significant other

Misollar

I'm with my significant other.
Yanni was with his significant other.
My significant other has 3 nipples.
Do you have a significant other?
Tom is Mary's significant other.
My significant other and I often go bowling.

ot noun

One's romantic partner, regardless of marital status or gender.
A person with whom one has an important bond of some kind.

Manbalar: Wiktionary (Free Dictionary API orqali), Datamuse, Tatoeba (CC BY 2.0 FR), MyMemory.