I can tell that you're a girl of principle,for which I admire you.
There's nothing wrong with your rules,because they make you become the person who you are.
My advice is first,of course,stick to your rules,and second,find the one you love rather than the one who loves you,because the whole thing is about you living in the world in a way you wanted.
Following your heart is the most important thing.Make the decision that you'll never regret.
Hope you can figure it out soon and refresh yourself.