I tend to believe, when you're in a relationship, if you don't fight, it's not a real relationship. You have to have arguments and tensions, otherwise I don't believe it.
When you have a gown, there's much more to be concerned about. Where is this crease falling? Are you making a weird shape with the dress? Are you doing the designer justice? With a bathing suit, it's more about you and the mood you convey.
Singing and being truthful to a song... I've developed that skill, and I know how to do that real instinctively, that's all I've been doing for the last 25 years.