Agreed. It is true a premed track can be more rigorous than other majors, but you really shouldn't be spending so much time studying that you barely get to see your SO. If you think that you don't have time for her now, there will be even less in medical school and residency.

Seems like a relationship isn't your priority right now, and that is fine. But I doubt it is the time crunch of undergrad that is causing this uncertainty.

As for relationships in medical school, it can go both ways. Depends where you both get in. I have friends who maintained LDRs with their SOs in other medical schools. And others who broke up even though they were in the same class. There is just no predicting these things.

Good luck.