When people are truly dehydrated, the impulse that tells them they're thirsty shuts down. That's why they may not know they're suffering from a lack of water. In a metaphorically similar way, Pisces, you have been deprived so long of a certain kind of emotional sustenance that you don't realize what you're missing. See if you can find out what it is, and then make measured (non-desperate!) plans to get a big, strong influx of it. The cosmic rhythms will be on your side in this effort!