Kelsey Nicole was with Megan Thee Stallion, her former BFF, the night Tory Lanez shot Mg

In fact, there is a theory that Kelsey was the real shooter.

Why?

Because on the night of the shooting, Kelsey -- who had dated Tory -- discovered that Meg and Tory were sleeping together.

Kelsey and Meg have  both denied that Kelsey was the shooter, and the jury agreed.

Kelsey addressed her relationship with Meg in her first official interview since the shooting.

During that chat, she says she's still unsure why she and Meg fell out.

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"It's so unclear to me why we fell out," she said. I'm a type of person who likes to communicate things. Some people don't like to communicate. When you're close to this person and this person is supposed to be like your best friend, your family, your sister, like, you'd be able to talk about these things...and agree to disagree."