Conversation so far:
How does Season 1 of the show Gossip Girl start off for Chuck Bass?
In the pilot episode, Chuck Bass attempts to rape both Serena van der Woodsen and Jenny Humphrey.
Who are Serena van der Woodsen and Jenny Humphrey in the show Gossip Girl?
Did Chuck Bass succeed after attempting to rape Serena van der Woodsen and Jenny Humphrey?
Did Chuck Bass try to rape anyone else besides Serena van der Woodsen and Jenny Humphrey in season 1 of the show Gossip Girl?
With time, Chuck Bass attenuates his behaviors as a sexual predator and becomes more of a manipulating womanizer.
Did Chuck Bass's womanizing ways catch up to him in season 1 of the show Gossip Girl?
Nate Humphrey and Blair Waldorf rekindle their relationship. This leads Chuck Bass to have a temporary rift with both Blair and Nate.
What happens during Chuck Bass's temporary rift with Blair Waldorf and Nate Humphrey in season 1 of the show Gossip Girl?
Chuck Bass and Eric van der Woodsen become especially close.
What are some other very important aspects that takes place in Season 1 of the show Gossip Girl besides Chuck Bass and Eric van der Woodsen becoming especially close?
At Bart Bass and Lily van der Woodsen's wedding, Chuck Bass apologizes and confesses to Nate Humphrey that he was in love with Blair Waldorf.
Does Blair Waldorf say that she's in love with Chuck Bass too in season 1 of the show Gossip Girl?
During the wedding reception, Chuck Bass gives a speech about forgiveness that is implied to be directed towards Blair Waldorf. She accepts his apology and the two kiss.
What happens after Blair Waldorf and Chuck Bass kiss at Bart Bass and Lily van der Woodsen's wedding in season 1 of the show Gossip Girl?
As Chuck Bass and Blair Waldorf are about to embark on a trip to Tuscany together, Chuck gets cold feet.

Question: What does Chuck do when he gets cold feet?
Self-contained rewrite: What does Chuck Bass do when he gets cold feet as he and Blair Waldorf are about to embark on a trip to Tuscany together in season 1 of the show Gossip Girl?