The non-Dominant "kinky" lover:
This person is not into power exchange and being in control. They only enjoy the heightened sexuality the D/s scene brings to them. They feel "safe" in the scene if both the parties involved are having fun. The normally won't try new things without first being told by the submissive specific things they would enjoy. Their pleasure is from the sexual activity and not from spanking the submissive or being in control.
The role playing Dominant but not a Master: