I'm totally disagreeing with that! Angel all the way! B/S is based on hatred/sex/self-harm! C/A is based on friendship, but they have a brother/sister bond which doesn't translate to a relationship. They had to be told that they loved eachother for goodness sake! They are both lonely & love eachother but they aren't in love IMHO! Also, the same no-sex rules apply so C/A couldn't be together anyway, just like B/A!
And B/A - true love, friendship, respect, tenderness, trust, attraction etc etc etc! Need I go on! He was made to love her! He loved her from the moment he saw her. They aren't to be for now, but one day their time will come again.