My fiance and I have been happily together for 2 years. We moved in together very soon after we started dating. We were living like newlyweds for a year and then his (then 19 y/o) daughter moved in. I was excited in the fact that she and I could develop a relationship, sad in the fact that we were no longer alone (just being honest). She has been living with us since March of this year (6 months). I welcomed her, invited her to have luncheons when Dad was at work, hung out with her and really tried to bond as a friend.