Search Results: we are not in an official relationship

Person A
★ Person A shows signs that he/she likes Person B:
– she/he glances at Person B
– blushes lightly around Person B
– stands close to Person B
– shy/nervous around Person B
– touches her/his hair when Person B's around
– smiles around Person B
– etc
★ Person A is in a relationship with Person C
– Person A's & Person C's profile picture are matching on FB
– Person C seems to really like Person A
★ Person A recently became friend with Person D

Person B
★ Person B shows signs that she/he likes Person A too:
– she/he glances at Person A
– blushes lightly around Person A
– doesn't move when Person A stands close to her/him
– shy/nervous around Person A
– becomes slightly fidgety around Person A
– smiles around Person A
– etc
★ Person B really likes Person A
★ Person B used to be together with Person D, but it was never an 'official' thing.
★ Person B doesn't have feeling for Person D anymore but Person D still has feelings for Person B.
★ The reason why Person B is not with Person D anymore is because:
– Person D always makes up excuses
– Person D cancelled most of the dates
– Person D makes Person B feel sad/bad
– etc
★ Person B's sibling's good friend's sibling is Person D so they can't avoid each other.

So who should date who?
Should Person B remain single?
Or should Person A break up with Person C?