my two cents: GG
Chuck fell in love with Blair when she was herself and when she let her true colors show. He fell for her flaws and for her beauty. Dan on the other hand fell in love with Blair when she wasn’t herself, when she was down and when she was vulnerable.
Chuck and Blair kissed when Blair was at her strongest. When she was 100% herself.
Dan and Blair kissed when Blair was completely out of character.

And don’t try to deny it as Chair fans convenience wanking because Austin Winsberg confirmed that we’re supposed to feel like Blair isn’t herself lately.