Refers to a romantic couple or a pair of people, often in a dating or married context. Can also be used for a pair of matching items or animals, but the romantic sense is most common.
I saw a close couple in the park.
あのカップルはいつも一緒にいるね。
That couple is always together, aren't they?
The two of them finally became a couple.
A new couple formed during the show.
It seems that famous couple broke up.
They really are a well-matched couple.
heterosexual couple; opposite-sex couple
couple's plan; couple package; couple deal