Now sadly the romance that seemed to bring the Australian songstress so much happiness is over.
The reason given for their split is work. She has been toiling away on her 12th album and has signed up for The Voice. Meanwhile Andres, one of the world's most successful male models, is trying to break into the world of acting.
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The pop princess – who has had the public spinning around to her music for more than quarter of a century – knows that in her business with its constant travel and demands on your time a lasting love is a big ask.
Perhaps, that's why the 45-year-old always sounded cautious, refusing to discuss any relationship in permanent terms. Over the years that seemed to change with her 6ft 4in Barcelona boy.
Kylie began to let her guard now, describing him as "easy going, funny, loving and really supportive" and hinting that a family was on the cards.
But this year, sightings of them have been few and far between. Previously inseparable despite their many commitments, they have rarely been together. The singer, who in the past has dated Olivier Martinez, now the husband of Halle Berry, and Jason Donovan, is said to be devastated.
Take a look back at the relationship fans were hoping was for keeps.