Grammy winner's beau, Matthew, 47, looked dapper in a dark suit and button-up shirt as they held hands after the dinner date.
The couple met in 2010 on the set of the film Burlesque where she starred alongside Cher, and have been engaged since Valentine's Day 2014 but are in no hurry to tie the knot.
When asked about future wedding plans, the icon told E! News in 2015, ‘our love is secure enough that we don’t need a wedding to prove our commitment; we are enjoying our daughter, family, and our work for now. ’The Lady Marmalade singer recently completed a summer series of concerts where she performed at the Monte Carlo Summer Festival and in London, Liverpool, Brighton, and Scarborough, England, surrounded by energetic backing dancers.Read more on msn.com