In this interview clip, actress Jennie Garth, who plays the character of Sarah in the Lifetime Original Movie “Girl, Positive,” talks about how her character contracted HIV, and the ordeal she went through. The Lifetime Original Movie “Girl, Positive” is the story of Rachel (Desperate Housewives’ Andrea Bowen), a high school senior, whose world is thrown into a tailspin when she tests positive for HIV. In trying to deal with this frightening news, Rachel finds an unlikely ally: a substitute teacher (Jennie Garth) who has secretly lived with HIV for years. Unfortunately, secrets have a way of getting out — and both women soon learn that gossip, like disease, can spread swiftly. “Girl, Positive” premieres Monday, June 25, at 9PM ET/PT on Lifetime.