"Rob wants to break up with Scheana," an insider told Radar. "He says she's too demanding. That's why he didn't go to Mexico."
The trip comes just months after Marie began pushing for another ring from her new man.
"Scheana wants a ring from Robert," a source told Radar at the time. "She's super into him."
But, "he wants to focus on his TV shows" and "doesn't want to go there yet."
Do you think Marie and Valletta are over? Sound off in the comments!
We pay for juicy info! Do you have a story for RadarOnline.com? Email us at email@example.com, or call us at (866) ON-RADAR (667-2327) any time, day or night.