There is no problem with your age gap - the lady in question is legally an adult, and you are hardly over the hill are you? I really wouldn't worry about it - you may get some teasing from friends, but just smile, and don't rise to the bait. If you are happy, it's no-one else's business. A friend of mine is fifty, and his wife is thirty-three, but he looks more like fifty-five, and she looks about twenty! They are constantly mistaken for father and daughter, but they just smile, and get on with loving each other, ads they have for two years of living together, followed by thriteen years of happy marriage. Good luck.