A new sneak peek of WeTV's Braxton Family Values reveals what really caused Trina Braxton to file for divorce from her now ex-husband Gabe Solis, once and for all.

WATCH: Tamar & Toni Braxton Argue In New 'BFV' Sneak Peek 'I Don't Know What She's Talking About'

In the clip the sisters are out with one another when Toni Braxton throws shade at Trina for "believing in magic." She was referring to the many times Trina took back Solis with hopes that he would was a changed man after his struggle with infidelity. Tamar then asks Trina what happened this time to make her pull the plug on her marriage.

Trina answers, "There was some other things going on. Just some other things."

WATCH: Braxton Sisters 'Divided Like Never Before' As Trina Faces 'Biggest Challenge Of My Life'

Toni and Tamar can tell Trina is holding back some vital information and pry to ask her.

Toni wonders if Solis was still cheating.

"He did something else that she doesn't want to tell us."

Trina adds, "I don't wanna talk...I was just ready."

Traci then chimes in and calls out Trina for "giving us half the story. I feel like I'm reading a novel. I open it up, the middle pages is gone."

Toni wonders if they'll have to wait until the news hits the Internet to find out what Trina is hiding.

Trina reveals, "I'm just saying it's more serious than you guys think it is....They haven't even heard the scariest part. And there is no way I'm telling them the whole story right now."

Fans will have to wait until the season premiere to see what happens next. Braxton Family Values returns Thursday May 21 at 9/8c on WeTV.

Tags: braxton family values WeTV Reality TV