くれれば よかったのに

I wish you had

→ 呉れる
phrase Rare #40,163
I wish you had Expresses regret or mild reproach that someone did not do something for the speaker. The omitted action is understood from context, such as telling, talking, or calling. The space is included here to match the phrasebook term; Japanese normally writes it without a space.
JA: もっと早く言ってくれれば よかったのに。
EN: I wish you had told me sooner.

電話してくれればよかったのに

You should have called me.

— 惑星ソラリス (1972)

早く話してくれればよかったのに

I wish you had told me sooner.

— 大人は判ってくれない (1959)

もっと早く言ってくれればよかったのに

You should have told me sooner.

— エブリシング・エブリウェア・オール・アット・ワンス (2022)

言ってくれればよかったのに

You should have told me.

— ザ・マン・フロム・アース (2007)