I feel incredibly fortunate to have found someone who, rather than causing me to ask if I can visualize myself with them for the rest of my life, makes me feel as if I could not possibly visualize myself WITHOUT them for the rest of my life.
And, of course, I still end up spending 6-8 months of the year "alone", several thousand miles from that person.
Don't get me wrong, I fucking LOVE my job, but that aspect of it is its own special kind of hell. And it also means that someday (probably pretty soon) I'm going to have to choose between my career and having children.