The couple reportedly ended their relationship because their hectic schedules didn't match up, according to sources. They were allegedly spotted being affectionate with one another in Spain only two weeks ago but broke things off when they got back to Los Angeles, where Longoria spends most of her time. Arguello is reportedly always in Miami, FL, which created an issue.
However, some TMZ sources aren't completely convinced it's over and feel the relationship might just be "on hold."
"I think that's why our relationship is so special -- we truly started as friends," Longoria told People at the time.
Rumors had swirled Longoria, 38, and the 34-year-old entrepreneur and philanthropist were dating when Ready for Love was airing this past spring, but the couple insisted they didn't get romantically involved until mid-summer.
According to People, Arguello and Longoria met last year when he was cast on Ready for Love, which got pulled off the air after its third episode due to low ratings.
Although the show was canceled, NBC continued releasing the season's remaining episodes online and via On-Demand. Ready for Love concluded with Arguello picking former Miss USA Shandi Finnessey, but the pair reportedly split only a couple months later in 2012.