It looks like Leah Messer is investigating her husband’s extramarital activities.

After Breaking Celebrity News exclusively exposed Jeremy Calvert’s flirty texts and Twitter messages with hot single mom Brittany Musick, 27, the Teen Mom 2 star, 22, immediately reached out to her hubby’s new girl, Breaking Celebrity News can report.

“Leah direct messaged Brittany on Twitter to talk about the situation on Thursday night,” a source exclusively tells Breaking Celebrity News.

Rather than attack the West Virginia stay-at-home mom, the former MTV reality star was “cordial,” says the insider. “She actually apologized for Jeremy’s behavior.”

While Messer not longer follows Musick on Twitter, Breaking Celebrity News can report that she did on Friday, as this screen shot of Musick’s page reveals.

Messer’s Twitter profile picture can clearly be seen under Musick’s followers. (Former Teen Mom star Farrah Abraham is also one of Musick’s followers.)

As Breaking Celebrity News reported, the pipeline engineer, 25— who publicly accused his wife of cheating with her ex, Robbie Kidd, in October— called Musick “sexy,” told her his marriage was over, and asked the stunning blonde if she would visit him for a steamy overnight tryst in his traveling RV.

Messer has reassured fans that she is still married to Calvert— but sources tell Breaking Celebrity News that the mother of three is just holding on to the façade of a united happy family.