Taylor Swift, Calvin Harris Wango Tango Hookup: Dating Rumors Follow Concert Hand Holding

Taylor Swift and Calvin Harris are really heating up in the romance department. The 1989 singer has turned into a groupie for her alleged boyfriend Calvin Harris, as she has been making her presence known at his concerts over the last couple of weeks. The most recent show of his that she attended was at the 102.7 KIIS-FM's Wango Tango festival in Los Angeles over the weekend. The blonde bombshell traveled to California to support her hot Scottish DJ at the event, where she was seen doing her signature Swift dance moves from the audience.

According to Radar Online, Tay Tay not only got to see her rumored beau, but also her bestie Camilla Cabello's band, Fifth Harmony, as well as her worst enemy turned buddy Kayne West, as both acts were also part of the musical festivities. Taylor got to hang out with her friends, the Haim sisters, as they rocked out to the music and got to take in the eye candy that is Calvin Harris.

While the star looked gorgeous from the audience, as she sang and danced along to the music, it was the events that transpired after the concert that got the rumor mill turning.

E! News reported that the rumored couple got cozy backstage, as a source told the news site, "They definitely looked like they are dating."

Also Ellen K, who is a host on Ryan Seacrest's radio show, posted an Instagram video from backstage, saying that she spotted Harris and Swift holding hands, and the looked "really happy."

A video posted by On Air with Ryan Seacrest (@onairwithryan) on May 9, 2015 at 10:38pm PDT

The caption on the video read, "SPOTTED @taylorswift and @calvinharris holding hands at #WangoTango!!!"