Kendra Wilkinson is allegedly headed for divorce after her husband Hank's affair with a transsexual model. But why is Kendra so angry when her relationship with Hank Baskett is reportedly considered an open marriage?

According to Hollywood Life, a source reports that Kendra and husband Hank are in an open relationship. "Kendra and Hank have an open marriage. They have had people join them in the bedroom from time to time, and have also had their own trysts throughout the years," said the source.

Kendra was recently spotted out without her wedding ring, causing a lot of speculation on the status of her marriage with her husband.  "Actions speak louder than words-and stepping out without your wedding ring amid confirmed news of your husband's cheating scandal speaks volumes," a source told US Weekly.

The magazine reported that Kendra threw her wedding ring down the toilet when she found out about her husband's affair with transsexual model Sabrina Ava London.

Is it because the affair was with a transsexual that Kendra is so angered about the affair? Kendra was reportedly so angry she acted violently when receiving confirmation of the news.

"In a rage, she punched walls in their Calabasas, Calif. home, threw their 2009 wedding photos into the pool, and even pulled off her wedding ring, flushing it down the toilet," the insider said to US Weekly.

Apparently, it is the secretive nature of the cheating that has upset Kendra to the point of a divorce.

"Cheating in a relationship is never OK under any circumstance, but especially given that Kendra is "a little freaky" herself and the fact that she "doesn't mind if Hank's eyes go astray," according to our sources, it's such a huge surprise that Hank would betray her like this, and it's totally unacceptable. It seems like, whatever Hank's predilections, Kendra was on board for the long haul - until now," an insider told Hollywood Life.