because their relationship is dramatic & difficult, they go through a lot of shit together, they are similar in ways. in season 2, they deny loving each other. & i think relationships are sweet. well, thats why i like them together.
well I like them because chuck had feelings for blair from the start but she wa with his best friend ,and when they actually got togather blair tried to fight falling for chuck old boy but she ended up falling hard!!!!and he has alays loved blair thats why I love them!!!! chair forever!!!!