We all know that Nick Jonas doesn't like to kiss and tell, but this time we may have caught him red handed. It seems that Nick has been getting really close to his Les Miserables co star, 20-year-old British actress Samantha Barks.

While at the Les Miserables 25th Anniversary afterparty, the two were spotted dancing and holding each other’s hands throughout the night. When asked door People Magazine about his personal life, Nick said, “I keep that stuff to myself." However, when Samantha was asked about Nick she could only giggle and reply back, “Nick is such a wonderful person."

Not only were they spotted acting friendly at the Les Mis afterparty, some very lucky schoolgirls spotted the costars at the London Zoo today. While on a fieldtrip, some London teens claim they saw Nick and Samantha holding hands while checking out the monkey exhibit. A Twitpic definitely confirms that Nick spent the dag at the zoo, but unfortunatley there's no foto evidence to back up the alleged handholding.

In Les Miserables, Samantha plays Eponine, who suffers from unrequited love for Nick's character Marius. Has Samantha fallen for Nick like her onstage character?