why do all guys lie to me!?

The guy I'm interested in now told me he didn't have a licence at all and then today suddenly he's like ' I have my green P's how is that hard to understand?' I said well maybe because you told me you didn't even have your L's! 

It's little lies like that, that are bloody annoying. Is it me? Or is it just them?? I swear it happens all the time now and I'm starting to not trust guys anymore.