fair-weather friendship

Noun

A friendship that is utilitarian and opportunistic.

Japanese Meaning

都合の良い時だけ付き合う友情 / 利己的かつ機会主義的な友情

When the fundraising ended, his fair-weather friendship became painfully obvious as he stopped returning my messages.

募金活動が終わると、彼の都合のいい友情が痛々しいほど明らかになり、私のメッセージに返事をしなくなった。

Sense（1）

A friendship that is utilitarian and opportunistic.

fair-weather friendships

（ plural ）