Lifetime explores the world of teen love, sex and gossip in the Lifetime Original Movie "Girl, Positive," the story of Rachel, a high school senior who fears she may be infected with HIV and must come to terms with the life-altering news.

The telefilm stars Andrea Bowen as Rachel and Jennie Garth as a teacher in Rachel's school who has been secretly living with the virus for years. S. Epatha Merkerson also stars in the movie as an AIDS clinic worker.

In "Girl, Positive," seventeen-year-old Rachel Sandler's (Bowen) carefree world is jolted when word spreads through the internet that her neighbor Jason (Eric Von Detton), a handsome and popular athlete who died an untimely death, was an intravenous drug user. After receiving a mysterious computer message claiming Jason was HIV-positive, Rachel worries she may be infected since they once had unprotected sex. Determined to secretly learn more about the disease, Rachel is advised by her new substitute teacher, Sarah Bennett (Garth), to visit the local AIDS clinic which her friend, Ariel (Merkerson), oversees.

During Rachel's visit, she takes a rapid AIDS test, but panics and leaves before learning the results. When Sarah discovers Rachel's test is positive, she breaks the shocking news to her, later revealing to Rachel that she herself has secretly been living with HIV for more than seven years. While both wish to keep their privacy, they soon find out that with today's technology of instant messaging, cell phones and blogs, gossip - just like disease - can spread fast and furiously.

"Girl, Positive" will premiere on Monday, June 25, at 9PM ET/PT on Lifetime Television, coinciding with National AIDS Testing Day on June 27.