<human>: Like the title said, my boyfriend and I are in the midst of a possible break up because of various differences. We love each other deeply, but I think we've turned into different people over the years. He told me that he's not sure if he wants to get married and have children. He said he realized he wants to be able to "relax" after he's done with grad school and not take on another life-long commitment. This was quite the shock to me b/c we've always talked about getting married and having kids one day. Well, the time has come to start acting on those thoughts and he's starting to back out. I want more than anything to work everything out with him, but I feel like I can't be dragged along because I'm in my mid-twenties. 

I feel too old to start over again with someone new. I know I'm only 26, but I've felt SO much pressure to get married and start a family that I feel like time is running out. My family is pretty tradition, my parents got married at 22. I'm just feeling really overwhelmed by what is happening.

Can you condense the text into a few key points?
<bot>: Long-term boyfriend and I might break up. I just feel so old to be starting over. Any advice? Am I just being stupid?