Mick Hartley

OK, this may not be the best version, but it is the original, and it does feature a man in a yellow suit:

It's also about the only one featuring a live performance that I could find on YouTube – though there are slight synch problems. And the guitar playing is mesmerising in its lack of rhythmic coordination.  

I like the Wikipedia summary:

The song is about a married man who, while patronizing a tavern, sees a beautiful young woman and is instantly smitten. Forgetting that he is married, he nearly succumbs to temptation. However, when the two share a slow dance on the floor, he sees the reflection of his wedding band and, remembering his vows to his wife, leaves.

There you go. It conforms to that strange Country mythology whereby loose attractive women are constantly approaching innocent men in bars trying to lure them away from their plain but loving wives at home. In real life of course any such approach would be accompanied by certain transactions of a financial nature, but the traditions of the genre tend to ignore these sordid details in favour of a storyline where the compelling sexual allure of the man is the only driving force.

It's a great song, though, and there've been some great versions. George Jones in 1967 is perhaps the definitive one, though I really like Conway Twitty, who could always be relied on to squeeze that extra touch of angst from a lyric. On the woman's side – less plausibly alone in a bar back in those days, but more plausibly approached by a glib would-be seducer – there's Tammy Wynette (though the video – perhaps trying to make a point – is of a selection of shots of drunk women, which leads a number of commenters to accuse the poster of disrespecting Tammy's memory). Or Tanya Tucker. Or Etta James even.