Dear Samantha:
Unless your friend is, indeed, suffering from poor memory (and you can evaluate this possibility by checking on hi/ her memory in other areas: if in school/ taking a class, does he/ she complain about remembering details for a test, or otherwise, in other scenarios), then the fact that he/she “talks to me constantly and doesn’t remember most of what I say constantly,” that does mean the person doesn’t care about what you say.
Everyone forgets sometimes, and perfection should not be expected or demanded, but frequently, repeatedly and even constantly forgetting, this indicates something.
Does this person remembers what you say in areas such as your intimate relationships, family relationships but forgets what you say regarding music, for example? This may mean that the person is indeed bored with some areas (other people’s favorite bands, for one) but is interested in other areas (relationships). In the latter case, it will be wise to talk to that person about relationships and not about music.
Does any of these possibilities explains your friend’s forgetfulness, or is there another possibility I didn’t think about?
anita