Just watching countdown and the wordy woman on it said that the word 'romance' originates from the Romans and the fact that many lovey-Dovey language comes from Latin words.
Another one I heard recently was the word ' namby-pamby' comes from The nickname given to 18th century poet ambrose Philips because of his sentimental poetry.(ie he was a bit sappy)
Just thought it was quite interesting and now wondering about other words and their origins (so I can one-up dh with my superior knowledge time he uses certain words)!