The 31-year-old rapper - whose real name is Stephen Manderson - has revealed he and his reality TV star spouse have attended therapy sessions in the past to save their relationship.
He shared: ''We both see the same therapist and, yeah, we have sat down with her together. Sometimes it's easier to understand things when they come from the person who is completely removed from the situation ... It's one of the most constructive things I do in my life.''
Meanwhile, the music star revealed that he and his wife never consummated their marriage on the night of their wedding.
The couple got hitched on September 10, 2013 in Somerset, South West England.
Writing in his new autobiography, 'Lucky,' he said of his wedding day: ''The next morning I woke up in the bridal suite at the house, thinking how crazy it was to suddenly be a member of someone else's family and to have a new member of mine. Not to mention the beginning of a new family we'd started ourselves.''
He added: ''The guests at our wedding had made it more special than I ever could have imagined. I felt the love and support of so many people.
''The 10th September 2013 meant the world to me. Then Millie woke up and gasped, realised I was still in my wedding suit. I'd put her to bed a few hours prior ... 'Didn't we?!'''