Jennifer Lawrence Spotted Backstage with Chris Martin at Kings of Leon Concert! (Exclusive)

Jennifer Lawrence sure is turning into a super supportive girlfriend – she was seen backstage with boyfriend Chris Martin at the Kings of Leon concert at the Hollywood Bowl on Friday night (October 3) in Hollywood.

The 37-year-old Coldplay singer was a surprise guest performer at the concert, where he joined them on two songs – “Talihina Sky” and “Notion.” Check out pics of him sitting at the piano in the gallery below!

“Jen was taking photos and videos of Chris during rehearsals on her phone,” a source exclusively told JustJaredJr.com. “They engaged playfully with each other, appearing like a couple in love. She kissed him on the lips several times.”

Jennifer previously was photographed supporting Chris backstage at the iHeartRadio Music Festival in Las Vegas last month. He was performing at the concert with Coldplay.