The melody of If You Love Me (Let Me Know) by Olivia Newton-John runs 217 notes across 67 bars, 2:26 long in Bb at 120 beats per minute. The tab sits low on the neck, mostly under the fourth fret, 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? If You Love Me (Let Me Know) chords and lyrics.