Before I entered the PhD program, a thought occurred to me (being a single guy) about what type of romance a person in a PhD program could start. The thought was this: there really isn't very much in the way of creating romantic opportunities in a PhD program. First and foremost is the amount time that must be devoted to classes. But, even if you find the time, the question becomes who. It is not the days of John Nash where you can go around dating your students, so people you meet through TA'ing are out. Your pretty much isolated in your own department, which rules out another source. The outside world is off limits because grad students have so few hours to devote to being in the outside world. That seems to leave other PhD students, but if the relationship becomes one of a permanent form, someone will have to sacrifice at least their short-term aspirations in favor of the significant other. It would especially be true for two people trying to get into academics, as it is unlikely for both to get academic jobs at the same or nearby schools of equal stature. When I noted that last point to the people in my study group, another person who is dating a PhD student from another program raised the same concerns.
(Trying to summon up my best, inner Carrie Bradshaw)
So, is it the single PhD student's lot in life to study everything but the Book of Love?