My girlfriend's birthday is on August 8. My best friend's birthday is on August 10. The plan is to celebrate both birthday's on August 8 which is a Saturday. My plan for that day is to spend the whole day with my girlfriend for her birthday and then meet up with my other best friends for a couple hours later that night. The problem is my girlfriend is not happy about that. Of course, I also invited her to come along but she is just not feeling it and in to it. Is she telling me not to go to my best friend's birthday too? If she is, is this fair? Our relationship is suffering because of these little things and I feel that even after spending the ENTIRE day with her and wanting to hook up with my best friend for a little bit at night should be more than reasonable enough for both parties to be satisfied completely. Please help.