<P> Nate is able to stop the presentation before the "Most Secret Affair" slide comes up . Chuck and Louis ask Dan why he's seeing Blair so much when Serena comes and lies, saying that her and Dan are actually dating but didn't want to say anything until they knew it was going to work . </P> <P> Rufus finds Lily in an art institute waiting for Charlie to show . When Lily sees Charlie, it turns out to be another Charlotte Rhodes but she goes by Lola . They apologize and go home . </P> <P> Louis meets Blair in the restroom and apologizes for being too suspicious . He tells her that he knows Serena was dating Dan and Blair was covering up for her . Louis tells her he feels she is being distant since the crash . She seems like she's going to tell the whole truth, but ends up telling Louis she's converting to Catholism like he had wanted for a while . </P> <P> Nate meets with the driver of Chuck and Blair's limo . The driver tells him that the brakes were acting weird when he was driving . He later speaks to the limo service and it turns out that Blair was the one that called the car . </P>

What is blair hiding from chuck in season 5