I was thinking about going on a cruise in the last half of December and searched the net for "cruise companion". I got a hit that led me to your post. I have been on a cruise several times before, but now I am on my own, and I would really like to go with someone. I am 37, look decent and in good shape. I live in Norway, but have an apartment in Melbourne I use some weeks a year. Let me know if this might be interesting, before sending picture and giving more details.
Not exactly what you are looking for but its close, let me know if you are interested.
Royal Caribbean, Independence of the Seas, Dec 21-29, Fort Lauderdale, I'm going with a family of 7 so I have a room to myself. Actual cost including taxes and gratuity is $985, I would do it for $450 or best offer. I'm a male, 35, educated, respectful and most likely be out late every night.