The 44-year-old said making their union official is not important as she would feel strangled, reported Showbizspy.
"Being pigeonholed or labelled this and that is something I've always felt strangled by. So I'm committed in my relationship, absolutely, and that's not to say I will never get married but I need to know I can step outside this room.
"I won't, but I do need to know that mentally I have space and freedom. Others would want to know they had those strong foundations but I'm just a different make-up I guess," she said.
Minogue says she enjoys visiting longtime partner Velencoso's family in Spain because life is so peaceful there.
"I love it there as I literally have nothing to do and I really get taken care of. Andres' father goes and buys fresh food, as it's all about eating and cooking, or Andres and I will take little drives to restaurants."
