What does it mean that he teases everyone except me?

Anonymous
There this guy I know, we've know each other for almost three years now and have always been friends and flirted from time to time (usually just while texting). I just started to like him and noticed that he teases and bullies (jokingly) almost everyone that he can but I realized (thanks to a friend) that he has never teased me. I tend to get told that I'm cute and if I get teased by others it usually is because I have a high pitch voice, almost cartoonish, and a baby face and he could perfectly use that but instead he just says I'm cute.
If someone comments something random during class he would joke about it but when I do he again says its cute and that's it. I'm even a little jealous of others because they get teased but I don't... What could it mean?
What does it mean that he teases everyone except me?
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