Does your girlfriend talk to you while you're watching something exciting on TV? And when you later have no idea what she was talking about, does she get very upset?
When women use the phrase “Listen to me”, you are still safe, she is giving you a second chance to engage in the conversation. But when she says, “Are you listening???”, you are dead. She will most likely make sure the rest of the day is going to be unpleasant for you.
Well, that's because she interprets your lack of attention as the lack of care or love for her. Women crave communication, they want to be heard. Listening is one of the more important aspects of any relationship. When she's trying to tell you something important, just stop for a few minutes and pay attention. Perhaps it might waste a few minutes of your time, but the pay off is worth it.