I really don't get her problem, in noble society, plenty of people have marriages of convenience. If she's worried that this relationship might somehow hurt her precious glass heart, then just don't love him. Be his partner or friend and hold your heart for yourself. And it's not like she has any close friends in this life except her maid so why is she worried her marriage will break her friendships? This is just your typical heroine drama of making a mountain out of a molehill. Watching her idiotically spin in circles is funny at first but it's getting kind of tiresome.