the example that clothesmad gave did not mention love or attraction did it? it noted changes that the husband wanted to see that the wife was not making.
and regardless of what is the stated reason, there are many commonalities in why people split, and its about differences, whether its expectations about treatment, about fidelity, about how one raises kids, its differences, now whether someone says that due to these differences and misgivings they did not feel attracted to the person anymore, or they felt they were trapped/oppressed its the same thing.