Macy was introduced as the daughter of Sally Spectra, with many of her storylines revolving around her relationship with Thorne Forrester, whom she has been married to three times.

Other storylines have revolved around her relationships with both her paternal and maternal family, and various other men, including Grant Chambers, Lorenzo Barelli and Deacon Sharpe.

It was a while before they ran into each other again at the Bikini Bar, each nursing their own broken heart—Thorne for his soon-to-be-ex-wife Caroline (Joanna Johnson), and Macy for Mick Savage, a photographer who had run out on her.

However, they start fighting again and Thorne soon falls for Karen (also played by Joanna Johnson), the long-lost twin of his first love, Caroline.

Her relationship with Thorne ends again when he gets involved with Claudia Cortéz (Lilly Melgar), a Forrester employee who is in the country illegally.

Around this time, Macy's long-lost father showed up back in the picture, bringing with him his own teenage daughter Kimberly (Ashley Lyn Cafagna).

Romantically, it wasn't long before Macy realized that Thorne had married her on the rebound and had no intention of stopping his relationship with Brooke Logan (Katherine Kelly Lang).

She was noticed by Thorne when she was singing in a small Italian café, and when her mother Sally had a heart attack, she returned to Los Angeles with Lorenzo, who had become her husband.

Unfortunately, at a time when he thought they were broken up, Thorne had indulged in a one-night stand with Macy's best friend and adoptive half-sister Darla (Schae Harrison).

Their friendship becomes romantic and Macy helps Deacon pursue custody of his son "Little Eric" (Connor Carmody) and his daughter Hope Logan (Rachel and Amanda Pace).

Although Macy hung on in the hospital in a coma for a few days, she never woke up, and her mother had to make the choice of whether or not to take her off life support.

In 2022, Charlie Mason from Soaps She Knows placed Macy at #13 on his ranked list of The Bold and the Beautiful’s Best of the Best Characters Ever, commenting "Bobbie Eakes’ songbird spent the bulk of her long run on The Bold and the Beautiful singing the blues, thanks to the fact that her relationship with true love Thorne was, in the best of times, on-again/off-again.