That is kind of a backward question. More like, can you be hurt by someone you think loves you? Well yes of course. But this thing he is going through has nothing to do with you. This is about him. In addition, you kind of set yourself up for disappointment when you do things for someone not to keep score, and that when you do things for people out of guilt or sympathy then you are creating a co dependent relationship. You don’t want that. You want a relationship based on love. Boundaries are not for keeping people out, they are for keeping you safe. Move on. Look forward to what life is offering you.