Calvin Harris is reportedly second-guessing his decision to break up from Taylor Swift. Apparently, the Blank Space singer is also having the same thoughts. The duo dated for 15 months before ending their relationship.

According to HollywoodLife, the Scottish DJ is finding it hard to forget the songstress. "Calvin has been having second thoughts about whether or not he wants to try to get back together with Taylor. He doesn't want to look back years later and feel like Taylor is the one that got away," a source said.

"Calvin has been spending a lot of time trying to focus on work and spending time with his friends cause he is having a tough time getting Taylor off his mind. He is struggling and trying to forget her while he feels like she has moved on with life and hasn't skipped a beat."

According to ET Online, the 26-year-old singer just days ahead of the split had discussed marrying Harris with friends. "A few weeks ago she was talking about marrying him," a source claimed.

Previously, HollywoodLife had reported that the 32-year-old DJ decided to part ways amid rumours he was not ready to walk down the aisle. "Taylor was starting to pressure Calvin into walking down the aisle and he just felt that he wasn't ready yet," a source said.

Swift was left "devastated" by the break up and is in constant touch with her best friends. To help her through the troubled times, Selena Gomez has reportedly invited Swift to join her tour.

"Selena invited Taylor to join her for a few songs on tour before her concerts even began," a source told HollywoodLife. "Now that Taylor is going through a break up, that might become a reality."

"Taylor gets so much love from the fans and that you might see her on stage for a night or two singing one of her many break up hits very soon," the source continued.

On 2 June, Harris had opened up about his relationship with Swift on Twitter. "The only truth here is that a relationship came to an end & what remains is a huge amount of love and respect," he had tweeted.

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