She tends to have close friends but she loses them quickly by flirting with their boy friends while she is already in a relationship. Some would consider her a "slut". If you're friends with a pretty lydia watch your back and watch your crush and or boy friend.
Girl2: No way shes my friend.
(girl two catches lydia)
Girl2: I HATE YOU!
Sweet, classic, not overused but still familiar. Punky, friendly and either very athletic or quite exotic