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She just can't quit him. "Teen Mom 2" star Leah Messer is reportedly back together with her ex-husband Jeremy Calvert.

In Touch magazine said the reality TV duo has been giving it another go since the beginning of the month.

"They really missed each other," a source told the magazine. "They recently started hanging out again an awful lot, and they ended up getting really close."

The couple finalized their divorce in June 2015 after reports that both of them had been unfaithful. But, they came together earlier this month to attend her daughter Ali's concert.

Leah and Jeremy share 2-year-old Adalynn together, but she also has twins -- Ali and Aleeah, 6 -- with her other ex-husband, Corey Simms.

"It was clear that they're back on -- they were acting like a happy family," the source said, adding that everyone is onboard with them rekindling the flame. "Even Corey seemed to be cool with the fact that Jeremy is back in her life."

Prior to getting back together Jeremy, Leah dated trainer T.R. Dues. The source said that friends seem happy with the re-pairing, but they want her to take it slow before deciding if she wants to say "I do" to Jeremy again.

"Leah is known to make impulsive decisions," the source said. "But everyone is crossing their fingers that they can make it work this time."