I now pronounce you man and mammal. I just want to apologize for how long this took. Work, and all kept me from this. But in any case, this story was a rather interesting one. I have only read one other story of yours, and that was a rather good one. I loved how the story flowed almost seamlessly from start to finish. I must confess, I was a little turned on by your final description of this wonderful future wife.
My only criticism is that I have read a few stories similar to this, each with the same principal; man meets woman, man falls in love with her, woman and man fall in love, and woman gets fatter while the man falls more in love with her. Otherwise, well done. Completely original.
Overall, I give you a 4.5/5 star rating for the reason stated above. Don't stop writing; you clearly have a knack for it.