In a past life, you had a relationship of nurturer to nurtured; this person was your parent or guardian and you were their child, or perhaps they were a teacher and you were their student. There was a lot of love, respect and care between you then, and in this life, those old, wonderfully close feelings are still there. These feelings brought you very close together from the start.
Your lover feels bonded and comfortable and you feel supported and secure when you're together. All the things that you want in life -- a comfortable income, children someday, a house of your own, maybe a dog or two -- are appealing to your lover as well. You could even be tempted to act on your feelings of familiarity and similarity and make a commitment to each other prematurely. If this happens, it probably works out just fine, but you would be better served to wait and really get to know each other. That's the only trouble with this aspect, though it doesn't really cause much trouble at all: You may not take the time to really get to know each other, because you feel so close so early on that you think you do know each other, through and through. You take your close bond for granted, which could make it difficult if problems or differences start to crop up. So take your time, get to know each other and have fun together -- that makes the benefits of commitment all the sweeter when you do finally take that step.