If a girl treats you differently, is because she likes you?

Anonymous
So I know it would be pretty obvious if a girl is extra nice to you and always makes you feel good. What about the opposite? Being nice, talkative and all smiles with everybody, but with me she tends to be a sarcastic smartass (in a good way lol) we both tease each other and are very sarcastic and we never really say anything "nice" about each other lol. I noticed that I'm the same way with other girls, I am nice to them but with this girl I just enjoy teasing her and have a good comeback if she says something about me lol. We initiate conversations about 50-50 and if I'm too quiet she'll start throwing sassy remarks at me here and there or just make small talk. Could she like me (like I said, this childish behavior is reserved for each other)
If a girl treats you differently, is because she likes you?
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