Don't know what to think?

Cherokee

My husbands a grain cart/ swather driver in the fields... and has been working late hours and gets home about 11-12 midnight and he works 30-40 minutes from where we stay in town, just had an odd feeling in my stomach so I checked find my iPhone app I don't know why? But I did and it showed he was at the mall! And I text him and tell him "where are you" he replied still at work trying to finish this field, and I told him are you sure? He said yeah. I told him I hope your not lying to me just to see what he would say then he replies no I'm not, so I screen shot the pic of the app showing where he's at, and asked well why does it show your phones at the mall if your at work then? He didn't reply for a while then texts back and says oh well I'm watching a movie! And I told him with who? Who you there with! He keeps telling he went by himself and wasn't with anybody! But how do I know that if he's lying to me about being at work when he's just at the show then I feel like he's lying to me about being there with someone and he's just lying about.. I really hate this, Lynn no behind my back shit!!