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One of the spices of a long standing relationship is/are words of humbleness which when significantly used strengthens any relationship.
Am not in a relationship but allow me share this briefly (smiles) :

An older cousin of mine who is married once attested to the fact he is always willingly to act on request rather straight/blunt demand by his spouse. For instance, his spouse could say, 'Get me a bag of popcorn on your way back home', that's supposed to be a demand right? He eventually forgets to get the popcorn. In contrast, when she says, Could you please, get me a bag of popcorn on your way back home?, that's supposed to be a humble request right? Naturally for him that creates a lovely impression on him, such that he would never forget to buy her even more than what she requested for. His nature automatically defines demand & request.... haha haha haha.

Every act of humbleness in a relationship counts, even to the slightest, so to say!

What a well thought out piece by @tifaong!
And a big love to @danielsaori for searching out this expensive and lovely piece, and the passion you have to polish & support minnows.