I agree that it should be an in between relationship.
Too much frankness often leads to too many arguements and in extreme cases losing respect for each others, while too much formality might increase the distance in between as both of them might refrain from frequently sharing of their inner feelings/ideas/thoughts...etc.
The best way is to keep a balance by remaining natural but also understand the nature of the situation, mood of spouse, presence of strangers, when to keep secrets,when to openly discuss the matter and act upon the following saying of
Imam Shafi`i (Allah have mercy on him);
“When one wishes to speak, one must first reflect, and if there is a clear interest to be served by speaking, one speaks, while if one doubts it, one remains silent until the advantage becomes apparent.” [Nawawi, al-Adhkar]
"Aaap tashreef rakhein, aap se eik guzarish karni hai"
QUOTE]
I'm sorry to say this Bro STP, but if my future husband EVER spoke to me like this (and mean it), i think i'd laugh so hard i'd probably knock myself out :)
