How do you love someone with a mental illness without losing yourself in the process?

You love them completely, you'd do anything for them, and slowly you realize that "anything" has been quietly costing you your own stability, sleep, and sense of self.

Nobody tells you that loving someone through their darkness means you have to keep one hand on your own light — or that doing so can feel like a betrayal.

Have you ever loved someone whose mental health struggles affected your own — how did you find the balance, and did anyone ever check on you?