"See if I care" is a phrase used to express indifference or lack of concern about a particular situation. It is often used in a sarcastic or dismissive tone. Some synonyms for this phrase include "whatever", "I couldn't care less", "it doesn't matter to me", "that's your problem", and "think what you want". All of these phrases convey a sense of detachment or disinterest in the issue at hand. While they may not necessarily mean that the speaker truly has no feelings about the matter, they are often used to communicate a desire to disengage from an argument or avoid further discussion.