The melody of You Mean The Whole Wide World To Me by Christina Perri runs 171 notes across 30 bars, 1:46 long in C at 134 beats per minute. The tab sits almost entirely in the first two frets, one note at a time — no chords to barre and no strumming pattern to keep up with. A piano backing track plays the chords and bass underneath, so the line you are learning sounds like the record even at half speed.
Prefer to strum and sing it instead? You Mean The Whole Wide World To Me chords and lyrics.