I'd say he's trying to convince a girl that he's being sincere in his advances and in his feelings. She seems to be cautious or distrustful, and he's trying to reassure her that he's being candid and honestly feels a lot for her, and wants to keep their relationship strong, as it's the only thing they've both got.
I'd say he's trying to convince a girl that he's being sincere in his advances and in his feelings. She seems to be cautious or distrustful, and he's trying to reassure her that he's being candid and honestly feels a lot for her, and wants to keep their relationship strong, as it's the only thing they've both got.