The weight being lifted is the girl coming back to him. When she leaves, all he does is cry.
Coming back to him is not a "fight of her life" because he truly loves her. He's begging her to open her eyes and see that she has an opportunity for a good thing by choosing to stay with him. He's afraid to be in love and he figures that she leaves because she's afraid. Now that she's returned, he hopes that they will cling to each other as they fight to make their relationship last. He can't show her anything to prove that what they have is worth it. There's nothing that he can buy to prove it to her. All he knows is that when she pulls away, he loses it and can't control his emotions.
The weight being lifted is the girl coming back to him. When she leaves, all he does is cry. Coming back to him is not a "fight of her life" because he truly loves her. He's begging her to open her eyes and see that she has an opportunity for a good thing by choosing to stay with him. He's afraid to be in love and he figures that she leaves because she's afraid. Now that she's returned, he hopes that they will cling to each other as they fight to make their relationship last. He can't show her anything to prove that what they have is worth it. There's nothing that he can buy to prove it to her. All he knows is that when she pulls away, he loses it and can't control his emotions.