A Belgian husband has spoken of his 'horror' after learning his wife of 19 years used to be a man.The duped 64-year-old - named only as Jan - said he had 'no clue' his bride had been born a boy.The shocking revelation only emerged after almost two decades of marriage when a cousin from his wife's native Indonesia finally exposed the truth.Jan told how he met 'Monica' in 1993 when she arrived in his home town of Antwerp as an au-pair to his sister's children.He described as her 'very beautiful and feminine' - but said he now understood why she was 'no good at ironing'.Jan told Belgium's Nieuwsblad daily paper: 'My second marriage was on the rocks at the time and we quickly fell in love.'I thought she was an attractive woman, and she was all woman - she had no male traits.'She was 27 years old at the time, so I asked her if she wanted children.'I was glad when she said she didn't as I was 44 and already had two of my own.'Over the years she said she was taking the pill, and even during sex I never noticed anything, though now I understand why she always used a lubricant, which is apparently normal among transexuals.'She was always a good mother to my children, and also a fantastic cook, though we wasn't that great at cleaning and ironing - and now I know why!'But Jan said the relationship had begun to suffer over the past two years as she insisted on staying out late on her own wearing 'very revealing outfits'.He added: 'She would wear tiny tops that revealed a lot of flesh and had more than 100 pairs of shoes.'I also caught her ogling pictures of young men on the Internet.'But I didn't suspect a thing until a cousin of hers came to visit and let something slip.'I mentioned it to my son and he said he'd heard a rumour too that Monica used to be a man.'One evening I confronted her and she finally confessed she had been born a boy and had a sex change operation.'My world collapsed in a few seconds. I was horrified. I feel like have been violated for almost 20 years.'The couple are still living under the same roof after a judge refused to grant Jan an order to evict her.But he added: 'We live in separate rooms and rarely speak. What Monica has done to me and my family is unforgivable. I just want her out of my life.'