"Where Are You Now" song? Rock/Pop?

There is a song that is stuck in my head, but I only know those 4 words! I searched and all that came up was The Summer Set, Mumford And Sons, and Justin Bieber, and it wasn't any of those songs. I think the "Where Are You Now" was the first line of the chorus, and I know that it sounded like as rock/pop thing. I listen to punk, so it might have been that Rock/Pop or Punk/Pop. Either way, it's super catchy, and I need to know