One of the most important lessons to learn in life is when you are feeling that someone does not care about your feelings, it is often more about them than it is about you. You are interpreting the situation that they do not care about you when that may not be the case. This person may be going through something else that is completely unrelated to your relationship. They may be lacking the emotional intelligence that is needed to empathize and show compassion towards you. They may not know how to express themselves in an appropriate manner. It is crucial that you do not personalize the experience. What this ultimately means is that this has nothing to do with you and it is purely a reflection on them. Do not take this experience and internalize it in a way that you begin to blame yourself for their lack of being able to care about you and your feelings.