Los Angeles: Musician Paul McCartney says it was difficult for him to express his feelings to wife Nancy Shevell.
The couple started dating in 2007 and got married in 2011.
"It can be quite hard to say 'I love you' to someone. I felt this with Nancy, but to say it wasn't that easy," thesun.co.uk quoted McCartney as saying.
The former member of popular band The Beatles, has expressed his feeling in a track, which is part of his new album "New".