• Taylor Swift and Calvin Harris spent the Fourth of July together.

Taylor Swift and Calvin Harris spent the Fourth of July together. (Photo : Facebook )

In a recent tweet to a fan, Taylor Swift, 25, said it was Lady Gaga, 29, who gave her good love luck. The "Bad Blood" hit maker seems imply that she is lucky to have DJ Calvin Harris, 31, as her boyfriend.

On July 18, Saturday, Swift tweeted a fan saying, "Go read Gaga's tweet that she sent me a few months ago. It's good love luck. Because it's not a tweet. It's a magical spell." She was referring to Lady Gaga's tweet to her on March 1 saying, "wow you're a sweetheart! Life is friends, family, and love! We all see that in you, your prince charming will come!

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Also on July 18, Saturday, Lady Gaga was spotted arriving at the airport in Chicago, Ill., Just Jared reported. She later on commented on Swift's recent tweet saying, "I only cast happy spells! Unless there's bad blood. I have a separate cauldron for that. Happy for u" along with a photo of Prince Charming and Cinderella.

Recently, Harris said he has never been happier being with Swift. In an interview with KISS FM, the musician said, "It's going absolutely fantastic. It's interesting because obviously there's different things written about it every day."

As Harris pointed out, somebody will make something up even if he and Swift do not do anything publicly for a while. He then denied rumors that suggest that he and Swift are moving in together and are tying the knot saying, "It does get more and more ridiculous, from me apparently being allergic to cats or Taylor and I are moving in together or we're getting married next week."