This phrase expresses a sense of frustration or resentment at being expected to do everything for someone. It implies that the speaker feels they are being taken advantage of or that their efforts are not being appreciated.
Here are some nuances to consider:
* The tone of voice can heavily influence the meaning. A neutral tone might simply be asking for clarification. A more assertive tone could be demanding a change in the dynamic.
* The context is also crucial. For example, if said in response to a request for help, it might be a genuine question. If said after a long day of doing favors, it could be a complaint.
Overall, the phrase "Est-ce que je dois faire tout pour toi?" expresses a feeling of overburdenedness and resentment at being expected to do everything for another person.