Love and music merged in a magical way in “Sin City.” During Sunday night, Alejandro Sanz surprised the thousands of fans who gathered at PH Live at Planet Hollywood in Las Vegas by inviting his current partner, the renowned Peruvian actress Stephanie Cayo, to the stage to perform one of his greatest hits together: “Corazón partío.”

The emotional moment marked the closing of the US leg of their international tour ¿Y Ahora Qué? Tour.

Although Cayo has been a faithful companion at the Madrid native's concerts in recent months, this time the appearance was not limited to a greeting or a dance, but gave way to a historic duet that unleashed the euphoria of the public.

With a notable complicity, loving glances and Sanz's arm surrounding the actress's waist, the couple passionately performed the emblematic song originally released in 1997.

Cayo wore an elegant black minidress, while the singer-songwriter opted for a relaxed style with a tank top and gray pants.

The chemistry between the two soon went viral on social media through videos captured by attendees.

After the concert, Alejandro Sanz himself used his social networks to thank his followers for their support and confirm the great personal and professional moment he is going through: “We lower the curtain on this stage with a full heart and the feeling of having won,” he expressed moved.

When did the romance between Alejandro Sanz and Stephanie Cayo begin?

The romance gained strength at the end of February and beginning of March, when they were captured in affectionate attitudes during Sanz's concerts in Lima, Colombia and Ecuador.

The highlight was a kiss captured on stage in Guayaquil, which went viral on social networks.

While Alejandro Sanz maintains his usual discretion, Stephanie Cayo has taken the first step to recognize that, indeed, there is an “illusion” that deserves to be protected from media noise.