Taylor Swift paid tribute to Calvin Harris by playing his track 'Feels So Close' before she took to the stage in Las Vegas.
The 25-year-old singer - who reportedly started dating the DJ in March - blasted out the hit to the crowd ahead of her performance at the Rock in Rio festival yesterday (15.05.15).
An eyewitness said: "They are playing Calvin Harris' music right now before she comes out."
The new couple - who were spotted enjoying a romantic date in Los Angeles earlier this week - have been spending a lot of quality time together and were clearly enjoying each others' company.
A source said: "They were very close together, leaning in to speak to each other and laughing a lot."
Taylor, who kicked off her new '1989 World Tour' in Tokyo last week, jetted back to LA last weekend to watch the 'Summer' hitmaker perform at Wango Tango and Calvin is said to be equally supportive of the blonde beauty.
A source told HollywoodLife.com: "He's so supportive of her and her career, he's not intimidated by it at all and just wants to do everything he can to cheer her on.
"Taylor is so happy with Calvin, things with them just keep getting better."