United Kingdom, April 24 -- LeAnn Rimes and Eddie Cibrian's 15th wedding anniversary has been "filled with tears and worry".

The 43-year-old singer-songwriter took to social media to mark the milestone, but admitted she and her significant other - who have sons Mason, 22, and Jake, 19, together - haven't been able to celebrate as usual due to "very tense, heart wrenching things happening at home with family".

She wrote on Instagram: "we got to step away for 3 days amidst work and some very tense, heart wrenching things happening at home with family. it's been a different anniversary, one filled with tears and worry, but in between, there were moments of laughter and deep gratitude for this love of ours. (sic)"

While the pair have been ...