The reality show star said she did it to stop him from texting other women.
This article originally appeared on PEOPLE.com.
Blac Chyna posted her fiancé Rob Kardashian's cell phone number to Twitter on Thursday night.
In a Snapchat video following the incident, Chyna, 28, revealed it was to make sure that Kardashian, 29, would not be texting any other women.
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"To ensure your man is not texting no bitches just tweet his number out! How's that feel Rob?" Chyna says, showing Kardashian next to her, looking down at his phone.
"Feels good," he smiles back at her. Chyna then snaps: "Get your number changed! Thank you."
A source recently revealed to PEOPLE that the couple's reality show, Rob & Chyna, is causing drama in their relationship.
"Rob's definitely not in a good place," a Kardashian source said. "Filming makes Rob uncomfortable and he's still trying to get used to that lifestyle."
Meanwhile, the soon-to-be mom finds filming to be "a piece of cake" and actually "loves all the attention," the source added.
Earlier this week, Kardashian tweeted his youngest sister Kylie Jenner's personal cell phone number – twice.
"Kylie's # ... I ain't hacked either this is rob dog lol," Kardashian tweeted along with the phone number and 16 crying-laughing emojis.