TAYLOR SWIFT, CALVIN HARRIS' 26TH BIRTHDAY CELEBRATION ROMANTIC? DATING TURNS TO SERIOUS RELATIONSHIP AFTER BREAKUP RUMORS (PHOTOS)

Calvin Harris may have a romantic surprise for Taylor Swift on her 26th birthday. Fans are wondering if the DJ will do anything special for the singer on her big day. Either way, it's clear their dating remains serious after rumors swirled that they had split up.

Will Taylor Swift have a romantic birthday celebration with Calvin Harris? The musical couple's dating has grown serious, so fans are wondering if the DJ will have any special plans for Swift's 26th birthday.

Swift has two reasons to celebrate this weekend. She turns 26 on Sunday, and Friday marked the end of her 1989 World Tour. And while Swift has not confirmed her birthday plans, she'll likely go all out to celebrate her big day.

Unconfirmed reports say Taylor Swift is renting out Hamilton Island for the day and flying her friends and family to Australia for the party. And sources say she may hold a  second party when she gets back to America, complete with massages, manicures and facials.

Calvin Harris will likely be a part of Taylor Swift's special day, as well. The stars were first linked back in March, and since then their romance has only gotten more serious. They've shown off plenty of adorable PDA and spent plenty of time together.

"It’s going absolutely fantastic," Harris said in July of his relationship with Swift. "… It's boxes I didn't even know existed, she ticks. It's really ridiculous... She's generally an incredible cook and human being."

Just last month, they were spotted on a dinner date with pals  Rosie Huntington-Whiteley and Jason Statham. And in October, was spotted in the crowd at one of Swift's concerts. Harris has even been bonding with Swift's cats, recently taking a cute pic of Olivia Benson nibbling on Mariska Hargitay's Video Music Award.

So clearly, Taylor Swift and Calvin Harris are still together, despite recent rumors that they had split up. There have also been reports that the stars are ready to get married, but Swift dismissed that speculation back in September.

"What the press says I'm doing: Buying a Bev Hills mansion, getting married in an English castle," Swift tweeted at the time. "What I'm doing: Playing a show in St. Louis."

Still, Calvin Harris will probably be at Taylor Swift's side for her 26th birthday. And it wouldn't surprise us if he had something romantic planned!

What do you think Calvin Harris will do for Taylor Swift's 26th birthday? Let us know your take in the comments section below!