Guys, My boyfriend has a fingerprint lock on his phone. Is he hiding something?

Anonymous
My boyfriend has a fingerprint lock on his phone and he says he does not have a pattern. I have no interest in looking at his phone but the fact that it is locked like that has made me worry if he is hiding something. Is this a common thing or could he be hiding something? He also has antivirus secirity app on his phone which has a feature to hide messages and calls from certain numbers and to lock apps. I don't know if he uses these features but again, I find it strange. He also occasionally likes girl's selfie pics on facebook. Should I be worried?
Guys, My boyfriend has a fingerprint lock on his phone. Is he hiding something?
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