also: かっぽー
noun
couple; lovebirds
Slang term for a romantic couple, often used playfully or enviously among friends. Can imply public displays of affection or being lovey-dovey.
あのカポー、いつも一緒にいるね。
That couple is always together, huh.
バレンタインデーは街中がカポーだらけだ。
On Valentine's Day, the town is full of couples.