Lyric discussion by xMonica 

Cover art for Happiness Is Overrated lyrics by Airborne Toxic Event, The

I went to their concert and he said that he had recieved a phone call from his ex "Catherine" who told him that she was getting married. And I think this is his shock and surprise at the news he recieved.

And the verse where he says "seeing your clothes spread out on my floor" he's remembering the heated sex that they had when they were younger and together.