Okay, first off, if you want to feel better about House/Cuddy, I strongly recommend reading
An Ideal State of Imperfection by
lieueitak. Post 7x15 Bombshells. It explores Cuddy's thoughts and feelings and reasons behind the whole ordeal and gives hope for the future. This is how I'd love their relationship to go. A girl can hope.
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Now, onto the actual ep. )