hi Olivia
you are not alone in doing this. i know of others who do the same thing but it is not normal or healthy. you need to find ways to distract yourself when the urge strikes to stalk her. positive self talk reminding yourself that your husband is with you, not her and when you go to get on your computer, choose to do something else like watch tv, read a book or clean something instead. you may find you have a sparkling clean house very soon. welcome to psych central. you will find we have several forums where you can post about your concerns and receive feedback from other members. you will get a lot of support here. again, welcome