What is the correct term for:

A person who is nice to you until they find out something about you they don't like and then they are not nice to you?

Discerning?

Depending what they found out you did... smart?

Maybe your looking for something like judgemental, it depends what you did and if it warrants them having mixed feelings for you afterwards.

A person who has their opinion, is what that person is. You don't give much to go on here. So you are not going to get the answers you are looking for.

Azzhole.

Depoends the kind of thing they don't like. Like they find out you're homosexual and then don't like you? That doesn't really change the kind of person you are and so they are wrong to not like you, there are lots of words to describe this kind of thing depending on what the thing is. Someone might be called homophobic or sexuality-prejudist for changing their view on someone because they are homosexual.

However, if you find out this person is a rapist, or a sex offender, or a serial killer. I think it's perfectly normal for someone to act different ly after finding it out..

It completely depends on what it is they find out.

a two-faced person? does that help?

FICKLE:

1. Characterized by erratic changeableness or instability, especially with regard to affections or attachments; capricious.

2. Where you want someone so bad nad "chase" them and once they like you back you don't like them anymore.

3. Acting like a woman regarding such things as making up your mind about things.

4. to experiment with or mess around with.

5. An amount of money equal to exactly 5 dollars.
(Normally used to buy norcatics).

http://www.urbandictionary.com/define.php?term=Fickle

Changeable: likely to change, especially in affections, intentions, loyalties, or preferences

[ Old English ficol "deceitful" < Indo-European, "hostile"]

http://encarta.msn.com/encnet/featur...fid=1861673846

Likely to change one's mind without reason or warning, especially in matters of loyalty, affection or taste.

http://vocabulary-vocabulary.com/dictionary/fickle.php

Likely to change your opinion or your feelings suddenly and without a good reason.

http://dictionary.cambridge.org/defi...8626&dict=CALD

Quick to change one's opinion or allegiance; insincere; not loyal or reliable.

http://en.wiktionary.org/wiki/Fickle

Likely to change, esp. due to caprice, irresolution, or instability; casually changeable.

http://www.infoplease.com/dictionary/fickle