Instead, this thing (I don't even call it a relationship) has to cease to exist. What is the point of continuing like this without a purpose, a future? Leora doesn't want to get involved with him, she wants to be alone but she still keeps falling for it and feeling and seeing him again. And then you can see the results ... since Leora was calm and serene she immediately changes her mood when he is there.
If Leora cares so much about him, I wonder why they barely saw each other for weeks or even for a week they did not speak on the phone. With Paul she feels every day as it happens ...