You've got a possessive streak a mile wide as the week begins. Those in relationships may find themselves helplessly jealous, while singles grasp after something or someone. Do what it takes to loosen up and let go a bit: meditation, exercise, primal scream. By thursday and friday, you've lightened up and have some saucy, smarty-pants energy going. Anyone who can keep up with you is in for serious fun now. And that romantic idea you have? Make it happen. The weekend may be more about errands and bills than love, but surely you can fit a bit in.