"Frog Soup" is an interesting concept. As a cold-blooded critter, a frog cannot easily feel the difference between hot and cold, although when cold the frog, like all cold-blooded animals, gets a bit sluggish. On the other hand, when you put a frog in a pot of water, and start to turn up the heat, the frog will not notice the gradual rise in temperature, and will be happily swimming around up till the point the frog finally succumbs and is cooked.
So we use the phrase "frog soup" as a metaphor describing how we can get ourselves into a situation through time, without ever having really been aware we were getting into a situation. This metaphor can be applied to relationships, jobs, life - almost anything where you wake up one day "cooked," without ever having suspected you were in hot water.
I've been using email since the mid 1970s, when I was first dabbling with messaging systems in the US Air Force. Even back then, I quickly established a routine for connecting to the network, and often checking to see if I had received any new messages. By the 1990s it had gotten to the point where I would actually delay other activities just to check and see if anybody had sent me an email in the past hour or so.