Living on a boat would practically guarentee that within 2 years you would be buying a house. If you sold one to live on the boat....you would be buying another. If you rented prior to owning the boat...you'd still be buying a house, because you crossed the ownership threashold that most women will never agree to retreat from.
My suspicion is that it would have little to do with a deck and pictures of chicks though....and much more to do with lack of a "real" kitchen and a "real" bathroom. The novelty of living on a boat wears off much faster for women than men and these luxuries on land become vitally important right around the two year mark.
In any event, you managed to succeed in averting a tempting disaster...I you.