Coldplay's lead singer Chris Martin who often keeps his relationship with wife Gwyneth Paltrow private, took a different move and declared his love for her at a concert in Miami.

In what seemed to be "A Rush of Blood to the Head," Martin made his way through the audience to find Paltrow and plant her a big kiss.

Paltrow seemed to be very happy but a little bit overwhelmed by all the attention from the 20,000 fans at the concert.

The moment was captured by a fan and the video posted on YouTube had nearly 1 million views as of Friday, a week after the concert in Miami's American Airlines Arena.

"Always nice to see a man publicly declare his love for his wife...especially after so many years of marriage," one person commented on YouTube.

Martin and Paltrow reportedly had a blast the weekend following the concert at Fontainebleau Resort in Miami.

"Chris and Gwyneth drank champagne and she was all over him," a source told People magazine. "They looked so much in love. Gwyneth danced all night."

The couple have been married since December 2003 and have two children, Apple, 8, and Moses, 6.

They rarely show their affection in public.