Yes I think it's ok, even if another thread states differently. The best contact I have is 15 years younger than me, 5 years younger did not work out, she probably thought I am too immature
8 years younger worked better although she was not for me. And I'm surprised, talking to a 20 year younger woman right now, and it's nice so far ... hmmm. I think it really depends on both personalities. I dated a 20 year younger at home and no way Jose, it was a daddy daughter type of thing, certainly not my thing.
You'll find a lot of 20-25 year old's marrying a 40+ gentleman in China, somehow that seems to work, although I think socially speaking, I think it is sort of a shame for the girl if the difference is greater than 10 years, so I was told anyway. My advice, follow your heart, not your hormones