Ex-Girlfriend was a female quartet comprised of Tisha Hunter, Stacy Francis, Monica Boyd and Julia Roberson of New York. The girls were the first act to be put out by Full Force's Forceful Records, a deal they got after Yvette Shure of Black Beat Magazine introduced them to the guys.

In the mid-1980s, three of the girls from Ex-Girlfriend were part of a quartet called Petite. While in the group, they released the song "He's So Fine" about the guys in New Edition. One of the girls left Petite and was replaced by Stacy of Ex-Girlfriend, completing their lineup.

Full Force bestowed the group with the surname X, working on the concept that the girls would represent female militarism.

In 1991, the group released their debut album, X Marks the Spot. The album had a successful single with "Why Can't You Come Home" which reached #5 on the R&B charts and #78 on the Hot 100. The album's second single, "You," reached #35 on the R&B charts.

The girls released a second album in 1994, titled It's A Woman Thang.