Three months ago I joined a couple and became their girlfriend. At first it was very good, we all had fun and I felt very wanted. However, over time my girlfriend appears to be losing interest. She rarely texts me, doesn't seem that interested when I'm over. I've brought this issue up and let my feelings be known, but she insists she wants me and that I am overreacting. Now today is her birthday and I wasn't invited to spend it with her. I'm incredibly hurt that I am not being involved but I don't want to ruin her birthday by throwing a fit about it. Does this seem irrational or does this seem like a reasonable reason to be upset? Is it too much for me to ask for more communication and attention and involvement, or should I be respectful of their apparent decision not to involve me? Help.