<p>I and many of my friends went through engineering while in relationships with no problems. Heck, I even married the person I dated for a large chunk of my engineering studies. No problems. As others have said, it isn’t engineering, it is your relationship. If she doesn’t support your life goals and the work you need to perform to achieve your goals, then she doesn’t really support you and, quite frankly, the relationship is either doomed or fated to be a miserable one as the issue (and undoubtedly others) continue to fester over time. You need to make it clear that you have certain goals and need to study and work your butt of to reach them and it is just something she will have to deal with.</p>
<p>Personally, I consider my family life and my professional life on equal grounds if not tipping towards family, but my wife is aware of the fact that I do sometimes have to work long hours and cut back on fun for the sake of getting my job done. I just personally make the choice to avoid doing so as much as possible.</p>