Harris first confirmed he was gay on November 4th 2006, he said; "I am happy to dispel any rumours or misconceptions and am quite proud to say that I am a very content gay man living my life to the fullest and feel most fortunate to be working with wonderful people in the business I love." (Wikipedia) He did this following media speculation of his relationship with Burtka after he appeared on How I Mate Your Mother. Burtka didn't respond to Harris' quote; however Harris later revealed that they were moving in together.
Neil Patrick Harris and David Burtka
He attended the Emmy Awards with his fiancé David Butrka in September 2007 and in 2009 appeared together for the first time on stage and sang a duet from Rent for a benefit in aid of The LGBT Community Centre in New York.
Harris refers to Burtka as "my better half" and "an amazing chef" (Wikipedia) 'I'm not the biggest fan of the word 'partner'. It either means that we run a business together or we're cowboys. 'Boyfriend' seems fleeting, like maybe we met two weeks ago. I've been saying 'better half' for as long as I've been able to. I think it's a little self-deprecating and clearly defines that we're in a relationship, but it would be nice to say 'my husband'. (IMDB)
When he was a guest on The Ellen DeGeneres Show, he said that his relationship with Burtka had begun back in 2004. On 14th August Harris announced that him and Burtka were expecting twins via surrogate mother. Their son Gideon Scott and their daughter Harper Grace were born on 12th October 2010.
Once the Marriage Equality Act was passed on June 24th 2011, the pair got engaged and announced it over Twitter. They revealed that they had proposed to each other 5 years prior but kept it a secret until same sex marriage became legal.
On 8th September Harris told the world via his Twitter page that he and Burtka got married over the weekend in Italy.
Pam Fryman, the director of How I Met Your Mother officiated the wedding and Elton John performed at the reception.
The couple bought a townhouse on fifth Avenue in Harlen in 2013, the Upper Manhattan neighbourhood that they had lived in for many years before.
Happy Wedding Anniversary Neil and David!
Source: Wikipedia and IMDB.