Why Calvin Harris Broke Up with Taylor Swift!

It was Calvin Harris who broke things off with Taylor Swift!  
I guess the swan has sailed! :(
​Here are some details from USMagazine!

It was Calvin Harris who ended things with Taylor Swift, a source tells Us Weekly. As previously confirmed by Us, the “How Deep Is Your Love” producer and “Shake It Off” songstress recently called it quits on their relationship after 15 months of dating.
“Taylor is doing OK now but she was upset,” the insider adds, explaining that the duo’s relationship just simply ran its course.
“It just wasn’t working anymore,” another source previously told Us.
According to the first insider, the pair were having issues before Harris’ May 20th accident, but Swift, 26, was there for him.“She was worried,” an insider told Us of the Grammy winner, who rushed to the 32-year-old DJ’s side after he was involved in a car accident in Las Vegas.

E! News had even more details about Calvin's (real name, Adam Wiles) feelings...

Adam really liked Taylor, she was not the type of girl he ever dates and he liked that. He liked how innocent Taylor was and that she had a good caring heart. Taylor's heart was more in it then he was. He started to lose interest over the past few months, but really tried to not just break up," a source tells E! News.
ReadThe Subtle Signs That Taylor Swift and Calvin Harris Had Broken Up
"They were just not very compatible in different areas in their relationship. The touring and traveling didn't help. It seemed like they were more friends than lovers," the insider added. "Taylor and Adam had very different group of friends," the source noted, and reassured that Harris "100 percent did not cheat."
"There were no other women involved with Adam. He did not cheat on her at all. Just not a good match." Another source also reaffirms that "no one cheated. There was no drama."
An insider close to Swift tells E! News, "She was in Nashville with her family and they have been helping her through the break up."
The source continues, "Taylor was really disappointed in Calvin and felt like he wasn't there for her. The relationship wasn't progressing the way she wanted it to. She felt like he wasn't taking it seriously enough and wouldn't come through for her when she needed him most. She felt down and like her needs weren't being met. She doesn't want to get back together."
"This all happened last week," a source told E! News when we reported the split. "Taylor and Adam had no big blowout fight, but the romance just was not there anymore for them. Adam is the one that ended it. It was all done in a very mature fashion. Taylor is pretty upset but they are still in communication. Taylor was there for Adam with his accident and supportive."
Neither of the stars have spoken out about the breakup.

Click here for details in their astrological compatibility chart that suggest a break up was highly possible!