Do people use kik to cheat?

I saw that my bf's phone lighted up green and had a kik notification. He's never said anything about having one before, and I don't know why he would need one since he has unlimited texting.. does this mean he's chatting up girls and using kik to hide it from me? I don't know. He has no international friends or anything, so I really can't think of another possible explanation.
Do people use kik to cheat?
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