The (Allentown) Morning Call reports that 45-year-old Kevin Esterly's wife filed for divorce Monday, citing infidelity and an "irretrievable breakdown'' of their marriage.
Esterly and the teenager were found in Mexico on March 17, about two weeks after they disappeared from Allentown.
Police have said they believe the girl went willingly with Esterly, who had posed as her stepfather and repeatedly signed her out of school in recent months.
The girl's family previously said the two met at church years ago, and the teenager was friends with one of Esterly's four children.
Esterly is in jail on a felony charge of custodial interference.