Stacy tells Nick that it's not going to work out and that she doesn't want to date him. Nick says he is going to be a huge star (it's not known though if he ever makes it or not). 6 months later Vinny and Stacy meet up again after Jamie and Melissa's party. Stacy and Vinny get married and have kids 6 years later. It would also assume that Jamie and Melissa are married as well but it's not known.