Sam like to push people around, possibly from insecurities that LGBT's in the closet have
Sam is not in a relationship often
Sam has a masculine personality
The Psycho Lesbian writing tactic, commonly used in anime, and most notably in Buffy
Sam is always crushing Freddies crush on Carly, is there an ulterior motive?
In iPilot, when Freddie said Carly was hot, Sam's response? She looks right at Carly and agrees verbally with Freddie, "You are."
iThink They Kissed. While loopy from laughing gas at the dentist's, Sam tells Carly she's a "pretty, blurry girl" She toys with Carly's hair a lot, then tried to kiss Carly and only Carly's quick reactions stopped it happening.
iSpeed Date. where Sam handcuffs Carly to a chair and gags her with duct tape... (O.O innuendo..)