She has "no legs" to walk across the country to meet and greet you! This is the way your dream is showing you how complicated this relationship really is. Since you both studied at the same university, your dream takes place in another place of learning, a high school. Your experience of kissing her was so real you felt it in your dream. There is nothing unusual about sexual feelings within dreams. It is obvious you have real true feelings for her, but she is just too far away from you to make a relationship work. Long distance relationships do not usually work out. You subconscious mind is aware of this, but your conscious mind is having a very difficult time of accepting this. I am not saying a relationship with her is impossible. I am saying, that somewhere within your mind, you know that it would be almost impossible.