I'm shocked to see several comments recommending the Dave Ramsey approach... I thought this was a real estate investing forum?
I'm not going to comment on the amount of student debt vs. current salary because you can't change the past. Your focus is on the future and how to improve.
The two most common strategies to start are house-hacking and BRRRR. I would recommend either or both.
The biggest thing is to start now. I completely disagree with waiting until paying off your debt. Paying off $230k debt with $60k salary will take 5-10 years at best... You'll be in a much better situation if you start REI now.
Don't even think about buying a property with your girlfriend. It's not "cute" or proving that you're "in love." It's irresponsible and completely unnecessary. Keep everything separate until you're married. If you want to invest together you can create an agreement and keep track of your personal contributions.