Betrayal Quotes in The Girl on the Train

We're not sure exactly what Megan means in this therapy session, but perhaps this is her way of telling her therapist that she's committing infidelity… and while she's at it, she'd be happy to… to… to, um, do so with him, too.

Rachel is especially sensitive to infidelity, so when her dream couple ends up not being perfect, those old pains resurface.

Rachel takes this betrayal extra personally. We're surprised she doesn't go try to have a word with her.