We kinda don't blame her!

J.Lo hired a private investigator to follow A-Rod, and the MLB legend was less than pleased when he learned of the shady maneuver, Us Weekly reports.

"He found out and they had a huge fight. But they're working through it," a source dished to the mag.

Jenny from the Block is obviously trying to make sure her man isn't cheating on her, after that mistress scandal back in June. The National Enquirer published an interview with a woman named Lauren Hunter, who claimed to have been sleeping with the slugger for years. She also alleged that they had been in contact after the former Yankee began his relationship with the multi-hyphenate. Jen stood by her beau, but it must have planted a seed of doubt.

Still, the Bronx-born beauty is head over heels for the athlete and sees a future with him.

"She's really into Alex and wants it to work. So she's trying to control as much as she can," the source added.

She should get out while she has the chance! This romance seems too good to be true.