The 59-year-old television host tied the knot with Portia in 2008, reported Femalefirst.
"Portia understands me completely. In our vows, she recited a quote, 'It is good to be loved. It is profound to be understood' - and to me, that's everything.
"What 'I love you' really means is 'I understand you,' and she loves me for everything that I am. She supports me and makes me happy," Degeneres said.