Best platonic/unconsummated love affairs

Toby Keith annoys me lately but I do enjoy his “Should Have Been a Cowboy”:

I bet you’ve never heard ol’ Marshall Dillon say
Miss Kitty have you ever thought of running away
Settling down, would you marry me?
If I asked you twice and begged you pretty please?
She’d have said yes in a New York minute
They never tied the knot
His heart wasn’t in it
He just stole a kiss as he rode away
He never hung his hat up at Kitty’s place

Vanilla Wafer, too.

One of the things that sold me on the series. :frowning: I haven’t been able to catch the newer episodes–is the same dynamic there between Rose and the Tenth Doctor?