"Lonely Ol' Night" - Who was Mellencamp referring to?

I heard John Mellencamp’s song Lonely Ol’ Night on the radio, and there’s a line where he sings:

Who was he referring to? I can’t think of any song that mentions standing in the shadows of love, but, then again, I don’t know every song out there.

It’s a reference to “Standing in the Shadows of Love” by the Four Tops.

Now don’t you feel foolish?

No more than usual.

FWIW, the song was inspired by a dialogue exchange in, IIRC, HUD.

Sir Rhosis