Small details

Sometimes I wonder why i have to remember all the key dates and details about someone and the other person never bothers. I'm always the one to remember birthdays, first meetings, funny moments and all and small details about someone like their favourite colour or favourite chocolate or fave ice cream flavour. But its never the same for me. People often forget my birthday or the colour that I like. Some of my closest friends don't even know some things about me. It just feels like sometimes people just don't care and I'm the only the that does.