Let’s look at this in terms of regularity, that is who has written the most songs that contain the word « love ». And, when doing so, it is George that comes on top! Here are the overall share of songs that contain at least one occurence of the word « love » for George, John and Paul for all songs written up to 1980 :
- George Harrison: 55%
- John Lennon: 40%
- Paul McCartney: 39%
As you can see below George is the one that mentions « love » the most consistently through time as the share of songs containing it never goes below 40% for any period. On the other hand there is a big decrease for both John and Paul during the end of the Beatles’ years as the share for the songs written by them is lower than 30% for both « 67-68 » and « 69-70 » period. This might have been a reaction to what was a heavy use of the word during their first years of writing songs.
However when we look at average number of occurences of the word within the song if it appears at least once then the results are quite different as it is now Paul that has the highest ratio. So Paul isn’t maybe the one that talks the most often about love, but when he does he makes it a bigger part of the song than the others do.