I'm dating an amazing girl who has a 3 and 5 year old. When they're with their dad, we're amazing together but when they're with her, my mood seems to change. No one is mean to one another or anything, I just withdrawl myself a little. The kids are awesome but I'm having a hard time wanting a relationship with them. My girlfriend says that if we're together, she wants me to end up loving these kids as my own. Not one part of me thinks I'll ever be in that mindset. I dont have children and again, these are cool kids but I dont want that to be a reason for us to break up. She wants me to tell her asap if I'm going to be in these kids life and NOT make them feel like "step kids". This girl is the best thing thats ever happened to me and I dont want to let her go or vice versa but what am I supposed to do in this situation?