<human>: Can you give me the gist of the text in a nutshell?

So we've been dating for about 15 months now. When we started dating I wasn't looking for a long term thing as I knew I'd be moving out of town for school a year later. But given my luck, I met an awesome chick at the wrong time. I could happily be with her for quite some time and the last year and a few months have been amazing but now...

* **I'm a 6hr drive away** which sucks for both of us
* **We're not getting younger** and relationships at our age get serious quick
* **I'm not ready for marriage** but I can potentially see myself with her
* **Thanksgiving is coming** and accepting her invite would mean extended one-on-one time w/ the folks, solidifying us even more

I probably should have stopped this from getting so serious a while ago but she really is quite an amazing person and her awesomeness got the best of me. It'll break both of our hearts but my thought process is this: At our age we shouldn't waste any more time, long term relationships seem to be a bit more serious when you're 30. So I shouldn't rob her of any more time and I should only do not-too-serious dating until I'm ready for marriage. If it's meant to be, we'll get back together then.

Reddit, is this the right time to break up with her? 

Or should I wait and enjoy what we have, make vacation plans, frolic on the beach, have snow ball fights, make hot chocolate in a cozy cabin by the mountains and fall so madly deeply in love that I forget I've dug myself in a giant hole that I can't get out of?
<bot>: We're in love and around marriage age but I'm not ready for marriage. Do I break it off before it gets tougher to leave or fall even more madly deeply in love?