I know she is the one for me

I am absolutely in love with the woman I am with. Shs is so smart and beautiful and unbelievably compassionate. I am planning on asking her to marry me but I am worried because she is the kind of person who is very sensitive and sometimes very scared to open up completely. When I mention marriage to her she kinda gets quiet and afterwards says that she gets worried when I talk about it. The only problem with this is that I dont want to be with her if she is not interested in spending the rest of her life with me. Being married is my biggest dream and I dont want to waste my time dating someone who does not want the same things I do.....What should I do?
Category General Confession