Help identifying a song

I'm losing it. I heard this song in my dream and I know it's real. I'm pretty sure it's from one of her more sadder songs, about love??? or a relationship she can't have, I dunno how to explain the melody in text. I think the lyric that I remember goes something like "and my heart begins to break" or "as my heart begins to break". It's not a slow song like Pink in the Night or angry loud like My Body's made of crushed little stars. Please let me know if it rings any bells and I'm sorry if this post has too little context. I'll try to answer any questions I can 😭

Edit 1: The lyric comes from a slight melody change from what I remember, similar to I don't like my mind melody wise(?) and similar like Abbey, Once More to See You, and vaguely like star. Somber like Wife, bag of bones despair level

Edit 2: I found it! It was "I want you". Huge thank you to everyone for helping and giving suggestions! You all are amazing!!!