I was reading http://m.chabad.org/library/article_cdo/aid/560111/jewish/The-Wifes-Grounds-for-Divorce.htm
And I saw
A woman may demand a divorce from her husband, if he has been found to be philandering with other women. There need not be proof of his having committed adultery, just of his having cavorted with other women. Even his causing her a bad name through his lecherous actions is likewise considered legitimate justification for the wife launching a divorce action.
Is this the halacha?
What is the source of this?
Does she get the kesuba?