Adding a few more lines, including the 6-word song title:
Some jealous so-and-so wants us to part
That's why he's telling you that I've got a cheatin' heart
Don't believe all those lies
Darling, just believe your eyes
And look, look, __ _____ __ __ ____ ____
I love nobody but you
As you might guess from the new lines, the last word of the title rhymes with 'look.'
The song was a #3 hit in 1959. I don't recall anything else by this artist, so the song may be a one-hit wonder.
The artist was 18 years old when he recorded this. He's 70 now and retired, but still performs occasionally at oldies festivals.
I'll be out this afternoon and early evening, so I'll give it up if no one gets it in the next hour or two.