"Every time someone close to me passes away I always text their phone and—I don't know why I do this often—I just wrote, 'I love you man,' and I knew he wasn't going to write back but I just felt like I had to do it anyway," the 26-year-old revealed, holding back tears.
He alluded to the message on Friday, when news of the artists death broke. "This is not real, I'm waiting for you to call me and say it was just a joke. I texted your phone before I know u got it," Charlie wrote in shock.
The "Attention" singer first spoke out about the death of the 26-year-old on Twitter, where he wrote, "I can't keep losing friends like this...I wish I spent more time with you these past weeks...I'm so sorry... rip MAC...you wrote the soundtrack to my college years and I'm so happy I got to know you...this sucks this really really sucks."
While the passing of his friend has been devastating, Charlie knows "his body might have left this earth but his soul and spirit has gone into so many people and to me."
He said, "He was one of a kind, there was no one like Mac."