[Perdogg]

I don't think she was acting in that scene.

[allmendream]

Great point! No wonder I thought it more erotic, it was (most likely) more real.

Why would anyone “act” that scene?

So many tell-tail reactions are physical - and quite hard to fake by having your hand under the covers near but not touching what they should be touching.

Gershon and Tilly have both independently said that their “acting” in Bound wasn't. ;)