I agree with my friend OronD, gave him 2 thumbs up. I don't think there is a problem with a 50 year old man and a 28 year old woman who get together if:

1.  they love each other

2.  They are compatible socially, intellectually, emotionally

      and sexually.  He  should be able to keep up sexually with the younger

      partner, otherwise this will not work.

3.  As long as both of them agree with each other the issue of

     childbearing since she does not have a child yet.  If the woman wants

     to have a child, it should be agreeable with the man.

   I have seen a lot of couples with this age gap and they are happily married.

   Good luck and have a happy life together.