Glee's Grant Gustin In A Mother's Nightmare image

Grant Gustin (Nikki Nelson/

TV movie.

Grant Gustin's Sebastian didn't get the guy this season on "Glee." As we wait to see if he has better luck in Glee's season four, the actor has been cast in the Lifetime movie "A Mother's Nightmare."

Per The Hollywood Reporter, the movie is about a 16-year-old who starts dating the new girl at school, played by "90210's" Jessica Lowndes. Things get ugly though when she accuses him of assault after he tries to pull back from the relationship. Annabeth Gish ("Pretty Little Liars") will play Gustin's mother.

"A Mother's Nightmare" will begin shooting in Canada next week. No airdate has been announced yet.

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- Lori Wilson