Television adultery is running rampant, with prime-time television "starting to look like an ad for Ashley Madison, the online dating service for married folks," writes T.L. Stanley in the Los Angeles Times.

Shows that have been touched by adultery include Showtime’s "Homeland," CBS’s "The Good Wife," The CW’s "Ringer," ABC’s "Revenge," Starz’ "Boss," and the new Fox comedy "New Girl," which features a boyfriend cheating on the show’s main character, the story points out.

The trend toward unfaithfulness comes at a time when marriage is more unpopular than ever: A record low 51% of people older than 18 were married in 2010, compared with 72% in 1960, the story points out, citing a recent Pew Research Center study.

Entertainment is changing to reflect the changes in society, Stanley writes. At the same time, broadcast networks and basic cable have become more explicit to compete with premium cable and the Internet, the story observes.