Ariana Grande is mourning the death of her ex-boyfriend Mac Miller, posting a touching tribute to Instagram.

“I adored you from the day I met you when I was 19 and I always will,” she captioned a video of Miller in a sweatshirt that reads, “Everything Will Be OK”. Grande dated the singer for over a year before the couple went their separate ways earlier this year. Miller, 26, died of an apparent overdose last week.

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“I can’t believe you aren’t here anymore. I really can’t wrap my head around it. We talked about this. So many times. I’m so mad, I’m so sad, I don’t know what to do. You were my dearest friend. For so long. Above anything else. I’m so sorry I couldn’t fix or take your pain away. I really wanted to.”