The oxymorons in Romeo's dialogue emphasize the anger he feels toward a certain woman. his certainty about his romantic fate. the extreme emotions that he is feeling. his confusion about Benvolio's advice.

The oxymorons in Romeo's dialogue emphasize the extreme emotions that he is feeling.

Oxymoron is a figure of speech in which two opposing things are brought into some kind of a connection. So, when Romeo speaks about things like love and hate, he is showing how strong his feelings are and how indecisive he is and how he doesn't know what he is supposed to do about that.