くれてた

was doing for me/us, had done for me/us

→ 呉れる
auxiliary · informal, imperfect tense Rare #35,626
was doing for me/us, had done for me/us Colloquial contraction of くれていた; used after a verb to show that someone did something for the speaker or someone in the speaker’s in-group, often as a favor.
JA: 友達が駅まで送ってくれてた。
EN: My friend had driven me to the station.
Conjugation of 呉れる

誰かが聞いてくれてたの?

Did someone ask for me?

あの子ずーっとしょーちゃんの看病してくれてたのよ→

She’s been taking care of Sho-chan this whole time.

— 映画 聲の形 (2016)

お見舞い来てくれてたって…私さ

You came to visit me in the hospital… I mean, I…

— 映画 聲の形 (2016)