Rose Leslie discusses Clare's complicated 'Time Traveler's Wife' flings (spoilers!)

In Sunday's "The Time Traveler's Wife" Episode 4, troubled Clare (Rose Leslie) commits the ultimate friendship foul,

Gomez (Desmin Borges) and his girlfriend, Charisse (Natasha Lopez), who is also Clare

(Theo James), Clare's cavalier, time-traveling lover wouldn'

 "Game of Thrones" star Leslie was taken aback when she read the head-swiveling developments of

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Leslie says she and Lopez had several conversations pondering the dynamics.

The rapid-fire dialogue scene was the first shot in the entire series – with James shooting all his 2008 Henry parts