Much more aggresively. I would've told her sister, "No thanks, no one fixes me with anyone but me." and then walking AWAY from BOTH of them. That's the unexpected right there. Her sister expects that if you reject Sarah, that you're going back to HER. But no man, F her, you don't give a shit and you're not there to take anyone's shit.

And NEVER snap man. Always, ALWAYS stay chill. Don't share your feelings man. That "I hate" part was not good. You should have just said, "Only I fix whoever I want for myself." Shows confidence, shows indifference, shows that you're basically saying that SHE is easy to fix as well, and so on. If she isn't stupid and already knew you were hitting on her, then saying that is basically like saying that she's easy to fix for yourself because you said, "Only I fix whoever I want..."

Pro Tip:Always remain unreactive when girls try to test your reactions.

I dont agree.

The pro-tip... Lets start there. Yes, in some cases but it is too general. Girls can actually test you to see if you have appropriate reactions, that you are emotionally well adjusted. I mean, if she tells you that her mom just died, you would not be unreactive because that makes you a psycho. You should react but not too much (or too little) since that shows that you aint a normal human being.

As for the aggressive thing, walk away and shit... Yeah, that is the kind of thing you do when you feel that you have to protect your manliness. The kind of reaction a betamale pretending to be alpha would display. That if anything is showing too much reaction.

Alpha males does not have to bother about getting upset about shit like that, they just adjust to the situation, I mean, it doesnt matter, the alpha male is in control of himself, why would that kind of shit even affect him?

So Sarah and you didnt get far enough to have a realation, but she thinks that her sister might like you. What is the big problem? I mean, a freebee!

Unless your manliness is threatened by a girl trying to set you up. I know a lot of people reacting like this, it is not that impressive. Getting all worked up about a minor thing like that. First off, the girl might not wanna do you a favor but maybe wanna help her sister. But everybody just assumes that she thinks that you suck so much that she needs to help you get some. Stop assuming and just go for what you want.

Yeah, she cockblocked you because she wanted her sister to have a chance. Also if you go out with a couple of girls it is considered the right thing to do to pay them some attention. If you are out with male friends, do you normally ignore them? Not really.