Season three takes on a significantly greater serialized format. Rachel begins working at Bloomingdale's, an upscale department store chain, and Ross becomes jealous of her colleague, Mark. Ross and Rachel decide to take a break; however, Ross is confused by this arrangement and sleeps with someone else, causing Rachel to break up with him. After believing she has no family except her twin sister Ursula (Lisa Kudrow), Phoebe becomes acquainted with her half-brother (Giovani Ribisi) and birth mother (Teri Garr). Joey develops a relationship with his acting partner Kate (Dina Meyer), and Monica begins a relationship with millionaire Pete Becker (Jon Favreau).