Ive been in a 3 year relationship with my girlfriend. We have lived together for 2.5 years. She's 30, I am 25. I am ready to take the next step and get engaged early next year but not ready for kids. She wants kids by next year which is understandable due to her age.. I love her and don't want to lose her but I don't feel like I'm ready to be a dad yet..any advice?