It appears new details are beginning to surface about what may have gone wrong in Big Bang Theory star Kaley Cuoco-Sweeting's marriage Ryan Sweeting.  

3 Things That Coud Have Lead To Kaley Cuoco & Ryan Sweeting's Divorce

The couple announced they were divorcing after 21 months of marriage on Sept. 25, and in a statement asked for privacy and said they wouldn't be commenting on the split again-but sources have since spoken up about the couple's marriage in recent months, saying that things just weren't working out anymore after the two exited the honeymoon phase of their relationship. 

"The few times Kaley and Ryan were out together recently, the tension was noticeable," a source told People Magazine. "You could tell the honeymoon phase had ended. It seemed they were trying to work out their marriage by going on dates, but they both seemed miserable." 

Kaley Cuoco & Ryan Sweeting Are Divorcing

It appears that the differences between the two began to surface more and more as they moved out of the early stages of marriage-something many speculated would happen after the couple married after only dating for six months. 

In addition, the differences in their careers also potentially began taking a toll as Cuoco continued to find success in her career, while her husband's continued to falter.  

"Kaley and Ryan seem to have totally different personalities. Kaley is extremely focused and high-energy. She seems to always be working. On her off time she also keeps very busy," the source says. "But over the summer, Ryan spent a lot of time at home. He has been struggling with injuries and barely practiced tennis. He has acted very down."