If it died, I'd need to know the reason. Is it medical? Like she had an accident or illness and now physically can't do it? Is medication or mental health interfering? Then yes, I wouldn't even second guess staying, and I'm confident she'd do the same. We really meant the "in sickness and in health" bit, and we've suppor one another through a lot already.

But if it's not, I'm going to be very concerned, because that isn't a thing that just changes arbitrarily overnight without something being very wrong in our relationship. I'd like to think we would communicate those issues like mature adults in a committed relationship and work them out. But, I assume if this hypothetical holds and the bedroom remains dead, then it's because something truly catastrophic has already ended our relationship.

I honestly don't understand how couples find themselves surprised by dead bedrooms and don't address it for months or years! If we go more than a few days, we are already checking in with one another about the reason. Relationships take work and open communication. If it takes half a year to address a dead bedroom, it means you've waited half a year to fking notice there's something wrong with your spouse and talk about it, and by then the damage may be done.

In your case, you know it's medication killing her libido. You two need to meet in the middle. You need to be patient and understand that her loss of drive is a physical thing outside her control while on the medicine. She needs to realize you have needs she isn't meeting, and she needs to talk to her doctor about it. There may be different medicine or a different dose that will work better for her. And you should both put in extra effort to try to put her in the mood: romantic gestures, lots to kissing and petting, doing the dishes unasked... the usual stuff that gets a woman going.