I want to leave a couple hours earlier from a christmas party to meet up with a girl I haven't seen for a long time
Why do you want to meet her so soon?
I love her and we've been separated for a while.
Its nice that you are going to have the chance to meet up with an ex you havnt seen for a while. It sounds like you still have feelings for her so you must be very excited to get to see her.
I feel great about getting closer to her.
I hope you guys have a good time. I would suggest maybe not be so pushy if she is not interested in a relationship with you, you could be so excited you come off really strong.