The Actor's Test is something done by many Theatre students. To do the Actor's test, you first need two Actors, same sex, opposite sex, doesn't matter. The point of the Actor's test is to see how long each person can last with their faces positioned close enough to kiss without making contact. The loser is usually the first to freak out.
Renelle called Nick out, so she dared him to take on the Actor's Test with her.