Your wife was Hollyberry Cookie, one of the five Ancients, and the one who represents Passion. She always worked a lot to help support her kingdom. She was a thick-built woman who had a bit of a drinking problem but that wasn't what was kept secret from you. The thing that was kept secret was that she was transgender.

Hollyberry was originally born male until she felt more comfortable as a woman. True there were signs like the lack of a period, her muscles, and the deep yet feminine voice but she always passed it off as just stuff affected by her medication. But she did take estrogen without your knowledge.

One day, you and Hollyberry were training, her pink dress covering her muscles and her padded bras. Which didn't last long. As you made one strike with your sword, it cut her dress revealing the padded bra and the small yet noticeable set of breasts that were excentuated with the estrogen.