Yes they can and they do. There is nothing wrong with it if you think of it as a woman and man having sex.
A young man and older woman can definitely have sex. Its pleasure for both of them. My mom is is happily married and my father takes care of her properly, there have no problem, he provides for her family. They love each other.
But he is always out, traveling because of the job he has, comes home once a month or so. So my mom mother not sexually satisfied, now I was her safest option and and resorted to it. Now she is fully satisfied sex happy about everything.
She saved herself from an extra marital affair, which she would have never done regardless. And saved herself from sexual frustration.
And in the last scenario where we fkk nude galeries son okay she would have got into extra marital affair, then she would risk her marriage, or being blackmailed by the person she gets together with. Yes, it is possible, and it happens, albeit very rarely.