ok here is an article for you to read. Older man marries younger woman...bottom line is go in slowly, keep your head and if you must get married always get a pre nup.
http://www.news.com.au/national/wifes-sick-betrayal/story-e6frfkvr-1226212823123
http://www.news.com.au/national/wifes-sick-betrayal/story-e6frfkvr-1226212823123