A commonly used expression that often shows that the person does in fact care...
Used before or after a sentance that the speaker 'does not care about' (but actually does)
expresses some anger, jelousy, frustration
'Not That I care... but, why were you talking to that stupid bitch' OR
'Oh my god, did you see that 'zooey' has the exact same dress as me... Not That I care... or anything...'