Tucker popped the question while the couple was overseas.
He made the announcement on his Facebook page Thursday, writing, "Feeling Blessed my best friend said YES!"
Caitlin shared a photo on her Instagram page with the caption, "Thrilled to be spending our lives together! I love you, @tuckerbarnesfox"
Congratulations to the happy couple! 💕
Be sure to tune into FOX 5 on Monday, Oct. 21, at 6 a.m. as Tucker reveals how he popped the big question!