Unknown song

[Meloboy]

Hey guys, so a few days a go I heard a song on the radio, and I've had it stuck in my head for the past few days and I remember hearing it when I was a kid, but I really don't know the title, or remember any thing much with the lyrics, all I know is that it had the theme of a married guy who meets a girl on either the train or bus to work and begins to like her or something, and I cant remember quite clearly but I know he ends up letting it be as he was already married or something. This is kinda vague I know, and I just need to know e title as I really cant seem to find it anywhere even goggling it failed. I even went out of my way to make an account here just to ask about it. Sk yeah thank you ahead for the answers.

[Otokichi]

This song about the ups and downs of marriage probably isn't the song/artist you're looking for, but it's a start. More details are needed, such as partial lyrics, genre, radio play date range, etc.

[Carl]

"The Metro" by Berlin maybe?

[Shawna]

"You're Beautiful" by James Blunt is about a guy seeing someone on a train but never talking to her... I have no idea how old you are, though, so that might be too recent.