When Bella turns back Alex was sitting there lost. She was heartbroken to see him in this state but she did not know what to do. She was hurt too but this was not the time to lose yourself in the pain. This was the time to face these things bravely.
She took his hand and put it on her shoulder and hugged him. She kept her head on his shoulder and took him in. his all pain and hurt, she tried to take it and replace it with the love she had for him. Her hands held his back tightly as if she was trying to be one with him through this hug.
She wanted to tell him that he was not alone. He would never be, she was there for him, today and forever. She keeps rubbing his back as if a mother soothes her child.