I did not call you his buddy or a liberal. I suggested that you are his foil. I suggest that you learn to comprehend what you read. Use a dictionary.
foil
noun
A person or thing that contrasts with and so emphasizes and enhances the qualities of another:
‘his white cravat was a perfect foil for his bronzed features’
foil
noun
A person or thing that contrasts with and so emphasizes and enhances the qualities of another:
‘his white cravat was a perfect foil for his bronzed features’