This isn't very old, but I'll give it a try:
The Obsession (2006 TV movie)
starring Daphne Zuniga, Elise Gatien, Sebastian Spence
A ballet teacher's obsession with a young student leads him to date the girl's unaware mother in order to get closer to the object of his twisted affection. Deborah Matthews' divorce from her husband Jason Matthews has just been finalized. She filed for divorce because she believed he was cheating on her. Jason has since moved away to work on an often communication inaccessible research ship. That fact and the divorce itself does not sit well with their sixteen year old daughter, aspiring ballerina Erika Matthews, who blames her mother for her parent's martial problems due to her being a workaholic and for her not forgiving Jason for the indiscretion, which he vehemently denies. To make matters worse, Erika's long time ballet coach, Leonard Capas, has just quit before her important audition into the Ballet America summer program. Mr. Capas' resignation was solely by a cryptic letter with no in-person good-bye to staff or the students. Luckily, the ballet school is able to fill immediately Mr. Capas' job by a young man named Reed Halton, who believes he can help Erika prepare for her audition.