Multiple online sources, including Us Weekly, are saying the couple broke up a few weeks ago but are on good terms. Reps could not be reached for a comment thus far.
The split does come as a surprise because Sienna and Tom just went on vacation together in Spain earlier this month.
Tom and Sienna have a three-year-old daughter together named Marlowe.
Stay tuned as we try and confirm if this news is true or not.
See photos of the couple in happier times… More Here! »