it sounds like your love for her is not dying but may be undergoing some kind of change I don't actually see it as what you want - but get the feeling that you have come so far with the friends part that you love is becoming more like that for a friend I don't see this as something good for the marriage though you need to be friends within the marriage and you know what I mean - I mean exactly what you are hanging out for
it is sad that she seems to think still that being single is the meaning of strength when the reality is that it is so much harder to be part of a couple and retain who you are at the same time how many people marry and become carbon copies of each other
I still think that you need to up the level of GAL for yourself at the moment you are in status quo I think she is happy here and will remain happy here for a long time you need to create some discomfort for her a little incongruence in how it is and how she thinks it is
maybe some little hints but not outright saying that hey we are great friends but I want a wife not another friend so even though I am happy with how things are it is not enough
it is actually very easy to walk away and be single and worry about no one but yourself - it does not show strength but selfishness and egotisticalism (don't know if I made the ism up or not) walking away and being single is all about me me me how can you be strong when you walked away how can we (you and I) work out how to put this in words you w will understand and how can we have her understand and feel that this is ok but Xue wants a wife and partner not a friend
this will be hard to nut out but hey we are smart yes?