Paul wasn't talking about marriage at all. He wasn't elevating the love between a bride and groom to some higher standard, where he called us to have this special kind of "patient" and "humble" love with...you know, that one special someone, who we're going to wake up next to every day.
His intention was to define love as it should manifest in life and culture, to friends, family, society, humankind...and probably, he especially meant to impact how people of faith thought about and treated each other (since that is who he was talking to).