Morgan Wallen

The low-key duo have "been together for almost a year now," according to an insider.

This means he won't be on hand to perform, present or accept an award.

He took to social media to offer a lengthy statement that includes an apology and explanation.

Plus, see which other stars are speaking up.

The singer says he is "embarrassed and sorry."

"I am you from the future and I came here to stop you from partying tonight."

He was scheduled to perform this Saturday.