Yes it is getting worse and the reason why is actually scriptural. 2 Timothy 3:1-5 states "But know this, that in the last days+ critical times hard to deal with will be here. 2 For men will be lovers of themselves, lovers of money, boastful, haughty, blasphemers, disobedient to parents, unthankful, disloyal, 3 having no natural affection, not open to any agreement, slanderers, without self-control, fierce, without love of goodness, 4 betrayers, headstrong, puffed up with pride, lovers of pleasures rather than lovers of God,
We are living in the last days, peoples morals in general have decreased therefore a selfish attitude dominates on a global scale. Mo loyalty, self control, and loving pleasures contributes to all the cheating you see today in relationships.
So is there a solution? Visit www.jw.org to find out.