Justin Timberlake and Mila Kunis: MTV Movie Awards

Mila Kunis and Juatin Timberlake grabb each other to symbolize that they're like brother and sister and not dating.

http://www.mtv.com/videos/misc/660135/justin-timberlake-and-mila-kunis-present-best-male-performance.jhtml#id=1664155