10/13/2016 6:56 AM PDT BY TMZ STAFF
The “Undisputed” host was discussing his own love, hate relationship with the Cowboys on FS1 Thursday morning — when he went in on Jessica and their off-the-field drama nearly had NFL ramifications.
Bayless — who basically eats, sleeps and breathes Cowboys — says Romo himself who has talked about how the relationship with the singer was bad for him.
“It was just tumultuous. It always one thing after another off-the-field,” Bayless said … “He had to pay too much attention off-the-field and he was not dedicating himself to the process of playing NFL quarterback.”
FYI, Romo dumped Simpson on her 29th birthday … and Bayless says his play immediately got better. They even won a playoff game that year.