Ok good, so most of them are pregnant now, and I got a few of them stating how their breasts got bigger due to the pregnancy but that seems to be it. Is there a really long time-gap between developments? Or is that as far as they develop in this game?You can make a girl break up with her boyfriend/fiancee/husband to become yours and as far as I can tell they don't break up with you on their own.
Fertility, i.e. chance to impregnate is a part of the characters status screen.