Hi nortycat, I know what it's like to be with a paranoid person and I know that it can destroy relationships. Some advice for you is that you must be strong as the paranoia may become unbearable to the point of leaving her, no matter how much you love her. Try and research paranoia and then you could learn more about how she feels and what she's going through, understanding your partners problems can be a great help to finding the solution. Of course it's not all up to you, she needs to try and get some help, perhaps counselling or drug therapy, to ease the paranoia. It will take participation from you both to make it all work. Hope everything ends up fine and remember through it all that you do love her.