Mona

Mona (Bonnie Somerville) — Mona introduces herself to Ross in "The One After 'I Do'" as a co-worker at Monica's restaurant. They later get reacquainted in "The One with Rachel's Date" (Season 8, 2001) and begin dating. Their relationship is troubled from the start due to Ross being the father of Rachel's baby; in "The One with the Stripper", Leonard Green calls her a "tramp" after Ross does not propose to Rachel, and Ross regularly forgets dates with her when Rachel has problems with the baby. They eventually break up in "The One with the Birthing Video" (Season 8, 2002) after Ross does not tell her that Rachel is moving in with him until the baby is born. In "The One with the Tea Leaves" (Season 8, 2002), Ross sneaks into her apartment to recover his "faded salmon color" shirt, which he left there, but has to hide when she arrives home with a date and is discovered when she and her date start making out and he tries to slip out; while Mona is angry with Ross at first, she softens visibly after he apologizes and implies she wouldn't mind getting back together with him, but Ross really only wanted his salmon shirt back, and leaves for good once she hands it over to him.