Moving in?

My boyfriend and I are both in university and will graduate the same year. We have already discussed how we will compromise where we live after graduation, taking into account the job market for both of our majors. I've essentially been sleeping over at his house for months now, and he has suggested the idea of us living together, as I essentially do, but with the inconvenience of having all of my stuff elsewhere. Is college too early to be 'playing house', especially as a 19 year old?