我造你狠幸福
[wŏ zào nĭ hĕn xìng fú]
This phrase uses some internet slang which means 'I know you’re very happy'. The word '造' is a typo of '知','知' means 'know'; '狠' is used instead of the word '很',which implies 'very'. Therefore, in context, this nickname expresses a mocking tone, suggesting that the other person seems to be living happily, but perhaps it is not genuine.