TW: mental health Is it normal to feel a bit “depressed” and anxious after dealing with a depressed (and possibly bipolar) partner for months?

Yes, I think it's normal. Trying to take care of someone else that has a mental illness does take a toll on your own body and mind. You should reach out to therapy or your doctor to get some help with this.

For sure. Being in a negative environment will take its toll on you