Giselle Bündchen and Tom Brady have been hit with divorce rumors lately, especially after the quarterback was snapped spending time with Ben Affleck and the actor's ex-nanny Christine Ouzounian. It's believed Giselle is worried that her husband may be cheating on her, so she has started giving her own nannies the third degree.

A source told OK! magazine that Giselle does not want any nanny to ruin her marriage with Tom. So she is becoming suspicious of her own nannies and has been questioning them about their activities when she's not around with her husband and children.

"She asks what they do with Tom and the kids when she's not around, and if he's ever flirted," the source said.

However, her interrogations are not making her marriage any better. Instead, it's only causing more tension. The source claimed Brady doesn't like that his wife is questioning their nannies, since it only "makes him look like a bad husband."

The couple have reportedly been fighting since August, after a photo of Ben Affleck's ex-nanny surfaced online, showing her wearing Brady's Super Bowl rings. According to US Weekly (via Life and Style), Giselle became upset after learning that her husband brought Affleck and his ex-nanny and rumored girlfriend Christine Christine Ouzounian to Las Vegas in June aboard his private jet. The 35-year-old mother-of-two is reportedly suspicious that Brady may be into something that could ruin their marriage.

Another source told OK! magazine in its Aug. 24 issue (via Hollywood Life) that since then the couple has engaged in serious fights because the model thinks Brady may be cheating on her. Giselle reportedly spends less time at their home and that she and Tom would "communicate mostly through angry texts."

Giselle is reportedly "at her breaking point" over their fights and has even threatened to file divorce. However, it's believed the couple is only putting on a united front amid the divorce discussion for their children's sake.

Ouzonian, the woman believed to be the cause of Jennifer Garner and Ben Affleck's divorce, previously stirred speculations she may also be dating Brady. A photo of the 28-year-old nanny shared by Life and Style shows her wearing five of Brady's Super Bowl Rings, looking relaxed as she sits on the jet on her way to Las Vegas. The photo was reportedly taken in June and only surfaced in August after The New York Post obtained an exclusive copy.