A source told OK! that the newly married model unexpectedly showed up at one of Selena’s most frequented workout spots in West Hollywood.
“It looked suspicious,” the source claimed.
The insider claimed Hailey acted like she was stopping by for a quick fitness session, but it was all a cover to get more information on her man's former love.
"Everyone was super protective of their girl Selena, so they shut it down fast, saying as little as possible," the source said.
Hailey's alleged spy operation comes weeks after another claimed the Disney Channel alum has been sending Justin "loving" text messages as he continues to work through his depression
For more details on Hailey and Selena's feud, buy the latest issue of OK! on newsstands now!