The emotional connection between you was powerful and deep, right from the get-go. You may not even be aware of it as such; you simply feel connected, and that was true even when you didn't know one another well. There is a sense that your souls recognize one another, that you're bonded on a spiritual level.
You also have a lot in common on a basic level -- your fundamental spiritual ideals are in tandem. You have plenty of wonderful discussions and heart-to-heart talks about your innermost feelings, hopes and dreams, but you have just as many moments of wonderful nonverbal communication. Your lover, especially, is able to tune right in to you. They are highly sensitive to your moods, and they have great respect for your feelings. They may finish your sentences or even intuit exactly how you're feeling even when you're not physically in the same space. It probably didn't take long to fall in love with this aspect in place! There is a sense of willing sacrifice between you -- your lover gets so much out of the relationship that they want to give back by honoring your bond and sacrificing time and tenderness for the good of their lover. They probably view you in an idealized light, but who cares? The devotion between you is real, as is the sweetness.