He's lying to me?

We're in a friends w benefits kinda situation at the minute but obvs we still speak a lot etc, but he's always told me he worked at one place and I know for definite that he doesn't and he works somewhere different bc I recognise the uniform he was wearing when he sent me a selfie. It doesn't really bother me where he works tbh I'm just confused as to why he's lying about it? And if he's lying about that it makes me wonder how many other thinks he's lying about. Idk whether I should ask him about it, but then it'll make it a bigger deal than it is and tbh the situation we're in its not a massive deal anyway if ygm. Would yous ask about it or just ignore it n let him tell you little white lies?