Throughout the entire 2015, the "Big Bang Theory" star, who's the highest-paid actress on television alongside "Modern Family" beauty Sofia Vergara, fought of reports of an inevitable divorce, only to begin the fall by announcing she was splitting from Kaley Cuoco's husband Ryan Sweeting - so what went wrong with their relationship?

It's only been a couple of days since the actress and Kaley Cuoco's tennis player husband told the world they were splitting up after nearly two years of marriage, and the first details of why the two have decided to call it quits have just begun to emerge.

According to People Magazine, the first reports of what went wrong between the star and Kaley Cuoco's husband have come from a source close to the couple, who claims the pair "seemed miserable" with each other's company when they were reaching the two-year mark of their marriage.

"The few times Kaley and Ryan were out together recently, the tension was noticeable," said the source, Hollywood Life reports, speaking about the status of the actress' relationship with Kaley Cuoco's husband just weeks before they officially let go. "You could tell the honeymoon phase had ended."

In fact, it's been barely a month since the pair was last spotted together, when Jim Parson's co-star and Kaley Cuoco's husband stepped out to attend the LG Electronics' event "Fam to Table," hosted by "Desperate Housewives" actress Eva Longoria.

According to Hello! Magazine, long before the split, Cuoco and Sweeting were already facing split rumors (which the actress vigorously denied time and again) since last spring, as it was said that the two seemingly had "totally different personalities" and didn't seem to agree on anything, as the pace in both their lives couldn't see them meeting eye to eye.

On the same day the two announced their split, Cuoco went out with friends not wearing her wedding ring - could Kaley Cuoco and husband Ryan Sweeting work things out in the end?