For Remus, love was like a weightless sigh, like being submersed in profound emotions of affection and attachment. Like there was this sacred unity between the two of them, like there was a language only they spoke to each other. With one look, time stopped. Remus felt acutely aware of those silver eyes on him, ushering him into deeper waters and submerging him under their depths. And with a sigh, he let these feelings drown him, forever altering his being.
For Sirius, love was intoxicating. An intoxicating concoction of emotions that held him, bound him to a unity of seemingly limitless warmth and radiance, and devoured him, leaving him without the remains of his former self, only a lovesick fool with little sanity and an unquenchable thirst for more of what drowned him.