At a birthday party people say nice, polite things and play the game of "you are special today" often not really meaning it. It's making a show of affection that may not be heartfelt. The (costly) gifts may be given out of obligation, and though of high financial value, can be meaningless to the recipient, (left gathering dust in a drawer) if the Birthday boy/girl has no great fondness for the giver. In fact, the ability/willingness to receive has more meaning than the object.
The love alluded to "right here right now" may be cruel, not always kind, not syrupy sentimental, but more heartfelt, real and lasting than the sweet things said before.
He's giving his lover something more, on the floor. What the heart really desires, but cannot always ask for.
So far as the music is concerned, it is quiet behind the description of the false sentiment, but overwhelms when accompanying the genuine emotion and action.