I MUST know who sings this song!!!?

I don't know the band name or the song title but i can describe the music video. It's an all boy band, they sounded kinda pop/rock-ish. In the video they were all in a hippy van, orange and white i think, and the music was with electric guitars and such but they were playing acoustic. they drive to this cabbin in the woods. They go in and after a while some girls show up... thats all i know. if you have ANY clue what im talking about, help me out :))