It is really impossible to imagine what life with a baby will be like until they are here and even then each of my three children had different patterns. It is important to look at how your boyfriend contributes in your relationship now. Does he help out with cooking, cleaning, etc. or does he see this as your work? I was usually the only one up at night since I was a stay at home mom back then, but he took over the minute he got in at night from grad school and helped with the bathing, bedtime routine, etc. Eventually, he left the research end of science and went into teaching to be able to spend more time with the family. The willingness to be a team player is vital to making a family work.