I'm late to this thread. Is 'Muskrat Love' on this list anywhere, because it should be right near the top! (((Shudder)))
Based on votes, it's leading.
If only they'd called it "Rutting Rats" we might have been spared its popularity.
Has anyone mentioned "Afternoon Delight"? That one always sickened me, but I'm not sure it counts as a love song.