He's working mostly for the $$.
Once you and your gf will have your own place, fully furnished, etc. Do you think you will stick to this job resulting you to having to travel or will you find another type of a job?
Absence does make the heart go fonder, it just suxxxxx.
Good luck on your house purchase! I really like the idea of you saving as much as you can for the place and for a rainy day fund. Good job!