I Want You, I Need You, I Love You is a song written by Maurice Mysels and Ira Kosloff, and another big hit single in 1956 for artist Elvis Presley.
The arrangement is mainly in the key of C, but uses a lot of chords out of the key, and even changes keys in the bridge. It includes several barre chords. For that, a complete beginner is encouraged to try another Elvis-song first.
The strumming could be either done in cut time with swing feel or in 6/8 . The latter is probably a tad harder to execute, since the right hand moves much faster.