Hello~ Can you help me say this naturally please?

(I'd like to know if I can use intentionally and unconsciously in this context.)
I would not use those words. the following suggestions are meant to convey the same idea.
A: Hey, why did you run tears just before?
A: Hey, why were you crying just now?
B:
I cried intentionally, if I don’t do that mom will give me just small pocket money.
B: Oh, I can cry on cue, and when I do my mom gives me more pocket money than she would if I were dry-eyed.
A: Give you a little money then that’s it, I could never do that.
You are something.
A: Aha! So you do it for the money! I could never do that. You are really something!
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A: Hey, why did you run tears just before?
Hey, why were you crying just now?
B:
ⓐThe story was so sad I run tears unconsciously.
ⓑThe story was so sad I run tears unwittingly. B: The story was so sad I could not hold back my tears.
or
B: the story was so sad, before I knew it I was crying.
You are not sad at all? Such a cold-hearted.
Aren't you at all sad? You must have a cold heart.
or
You are so cold-hearted!