Mark Feehily is not married, but he is engaged to Cailean O’Neill. In 2019, they announced their engagement via an Instagram post.

During an interview with The Sun in August 2005, he disclosed publicly that he was gay. When he was 14 or 15 years old, he recognized his sexual orientation. His sexual orientation was known to his family, bandmates, and close friends.

Furthermore, Cailean is not his first fiancee. Previously, the artist was engaged to British fashion photographer Kevin McDaid. The couple had been dating since January 2005, when they met at a Cheerios Childline Concert in Ireland.

In December 2007, the couple also graced the cover of Attitude magazine. The couple announced their engagement in February 2010. They did, however, announce their breakup on Twitter on December 31, 2011.

He then announced his engagement to Cailean O’Neill, with whom he had been dating for six years, in 2019. The couple has yet to announce their wedding date, but fans are eagerly awaiting the news.