YOU SAID:

I am jealous to death you slept so well

INTO JAPANESE

君がぐっすり眠れたなんて、本当にうらやましいよ

BACK INTO ENGLISH

I'm so jealous that you slept so well.

INTO JAPANESE

君がぐっすり眠れたなんて、とてもうらやましいよ。

BACK INTO ENGLISH

I'm so jealous that you slept so soundly.

INTO JAPANESE

ぐっすり眠れたなんて羨ましいです。

BACK INTO ENGLISH

I'm jealous that you slept so well.

INTO JAPANESE

すごくよく眠れたなんてうらやましいです。

BACK INTO ENGLISH

I'm jealous that you slept so well.