Would a guy lie about his name? If so why?

Okay so this guy i been talking to since November, he says his name is Trey Davis. I believed it but recently i found it oddly strang that i can't find him on google. And EVERYONE is on google (well everyone i can ever think of, my family and even friends). I asked him about it once he got quiet in a suspicious way, kinda in a "oh snap she caught me" type of quiet. Then he said "so you what you tryna say" when all i said was "i think ita funnny how i can't find u on google nowhere"... Why would he lie about is his name.. If he is? I plan on asking him about it next time we talk.
Would a guy lie about his name? If so why?
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