ENQUIRER Exclusive!

Selena Gomez Ruining Justin Bieber’s New Marriage

He's tending to his ex's rehab — and newlywed Hailey isn't happy!

Justin Bieber and Hailey Baldwin are already hurtling toward a bust-up — barely a month after their secret wedding — and sources link the rift to Selena Gomez! Insiders exclusively revealed to The National ENQUIRER that spiraling Selena’s recent return to rehab has hijacked her ex-boyfriend’s attention — infuriating Justin’s jealous new bride! “It enrages Hailey that Justin has been sending sympathy wishes to Selena when she’s his wife!” a source close to Hailey spilled. Meanwhile, Justin has been preoccupied with the troubled Disney alum Selena — and has secretly been in contact with her since she checked back into rehab on Oct. 10! Read on for the latest from within the Justin-Hailey-Selena relationship, and click here for more celebrity love triangles ….