Actors Neil Patrick Harris
and David Burtka have been together since 2004. The couple's relationship was made public after Burtka's guest appearance on How I Met Your Mother
stirred rumors that he was involved with show regular Neil Patrick Harris. Harris came out soon after in an interview with People and later publicly announced his relationship with Burtka.
The couple's first public appearance was at the 2007 Emmy Awards. They've made several public appearances since and in 2008 performed a duet on stage at Broadway Backwards 3