Zac Cheating on Vanessa?

Yesterday on MOD in Canada, Zac Efron and three of his cast mates from Hairspray stopped by and the host had asked Zac and Nikki to kiss. And they did! This is so wrong and I wonder what Baby V will do! It was such a sick kiss! EWWWWWW! They kissed like 3 times and I don't mean "peck on the lips!" Here you can see the video.. It's LQ but you can still recognize his adultery.