Melanie is a girl who dated Joey in "The One Where Rachel Finds Out". She was portrayed by Corinne Bohrer.
At Monica's Apartment the friends are about to hold Rachel's birthday barbecue, to which Joey invites Melanie, a girl who works in the fruit basket gift business.
Melanie wants to have sex with him, but Joey can't because he's participating in a research study in which he donates sperm for money. Joey keeps postponing sex with Melanie by doing other sexual things that please her only. This makes Melanie even crazier about Joey, and she quite literally fills his and Chandler's apartment with fruit baskets in gratitude. Joey is also having fun pleasing Melanie, which he points out to Chandler is something he doesn't usually do. However, as soon the sperm study ends, he changes his mind and returns to his normal love of sex.
Melanie doesn't appear after Joey's study ends, and is never mentioned again, which implies they broke up around that time.