Taylor Swift's Monday night performance at the Staples Centre in Los Angeles already made headlines for its stellar list of surprise guests – Natalie Maines from the Dixies Chicks, chat show host Ellen DeGeneres and singer Alanis Morissette – but that's not the only thing people have been talking about.

After she and Alanis wowed fans with a duet of You Oughta Know, Taylor went on to finish out the night with a typically epic finale, and she couldn't resist adding a little personal touch in for boyfriend Calvin Harris, who was there to watch the show.

After the final song ended and Taylor waved and bowed for fans, she ran down to the end of the central runway to shout three VERY important little words in Calvin's direction… "I love you."

While from the video it's not obvious who the sentiment is directed at, eyewitnesses said there was no doubt the words were meant for Calvin, who was standing directly in front of Taylor at the time. Aaaaw!

Just last month Calvin spoke candidly for the first time about his new relationship, saying he was loving life with the Blank Space singer, despite the constant press attention

"There'll be some sort of story, and they get more and more ridiculous. Whether I'm allergic to cats or we're moving in or we're getting married next week, you've just got to take it how it is, which is just that sort of news story which people read," he told Kiss FM.

"But for me it could still be a lot worse and I'd still be like insanely happy with it, so I'm good with it.''

Sounds like these two have long-term potential…