He lies

What's the best way to approach my bf about his lies 
He will tell me he's here meanwhile he's there 
I don't think there's cheating cause he always lies when he's out with friends and they all guys 
I hate fighting and confrontation but I always find out that he's lying 
I line in a small town so I always find out like right now he hasn't told me he's out yet he is someone saw him and when I tried calling he didn't answer