<human>: Can you condense the text into a few key points?

My gf long term goals are kids and marriage. This doesn't necessarily correspond to my long term goals. I am open to maybe getting married, and don't want kids (although I am not excluding the possibility that I might change my mind.) How should we handle this situation? Ie how should we frame the discussion, and talk about it in a productive way. What are some important considerations for the discussion. 

The available options/outcomes appear to be either. 

1. break up now, because are goals are mismatched. 
2. wait for a period of time to see if i change my mind and if i don't then break up in the future, or 
3. she changes her long term goal to coincide with my goals.
<bot>: my gf long term goals are to get married and have kids, and they conflict with mine. What should we do? How should we approach this?