Well here's half of the imagined train ride...
no mention of another man

Jim Reeves
Oh What It Seemed To Be Lyrics

It was just a neighborhood dance; that's all that it was,
But oh, what it seemed to be!
It was like a masquerade ball with costumes and all,
'Cause you were at the dance with me.

It was just a ride on a train; that's all that it was,
But oh, what it seemed to be!
It was like a trip to the stars to Venus and Mars,
'Cause you were on the train with me.

And when I kissed you, darling,
It was more than just a thrill for me.
It was the promise, darling,
Of all the things that fate had willed for me.

It was just a wedding in June; that's all that it was,
But oh, what it seemed to be!
It was like a royal affair with everyone there,
'Cause you said, "Yes, I do" to me.

[ trumpet - strings ]

It was just a wedding in June....

Gene