She then walks out of the temple completely nude and what makes this scene so important is how the entire conclave of Khalasar bow down to her and start seeing a woman as their true leader.
Drogo is left in a catatonic state.
Is that even a discussion? This scene does have some relevance to the storyline because it leads to another sex scene much later in the show where there is a reversal in the roles.
Also, we just dropped the paywall on last week's cover story interview with Kit Harington, read it.