neither do I, me neither/either [duplicate]
Solution 1:
Are you intending to tell this person that you don't like yourself? If so, it's 'Neither do I' or, more informally, 'Me neither."
If you mean that you don't like her, you would have to say 'I don't like you either'.
Either and neither are only used after a negative statement, so the response to 'I hate you' is 'I hate myself/you too'.