mutual love; being in love with each other
Describes a relationship where two people are in love with each other. Often used in romantic contexts.
二人は恋仲になった。
The two fell in love with each other.
彼ら
They were in love with each other for a long time.
Compound of 恋 (koi, 'love') and 仲 (naka, 'relationship'). The exact historical derivation is uncertain, but the combination naturally expresses a mutual romantic relationship.