Green tea bitch refers to a woman who presents herself as innocent, sweet, and kind in order to approach guys who she finds useful, potentially in the sense of
money, power, or purely fulfilling. (This is the green
tea part). Yet this woman is actually calculating and all her good qualities are fake merely in order to appeal the
guy. This woman uses many methods to achieve her goal, usually involves lying and being immoral. (the bitch part)
This strongly implies that this woman wants to intervene and destroy an existing relationship.
A typical example would be when a woman sends more-than-usual comfort and care to a
guy who is in a relationship and then later shows him that he means a lot to her. And then this woman
will try to reveal the existence of herself to the girlfriend/wife of this
guy. When the gf/wife gets made, she
will say things
like "I am very sorry and did not
mean to make your life like this" and the wife/gf is usually
mad. Guys, who (stupidly) have the instinct of protecting the weak one,
will usually start to fight the wife/gf and argue they are just friends. Then, with the great comfort and constant postive feedback provided by the green tea bitch and the ongoing madness with the gf/wife, the
guy will typically break up with the original gf/wife and likely to start a relationship with this green tea bitch who appears to be very sweet, nice, and supportive, without being aware that this whole plot is directed by this green tea bitch.