Going Through Your Man's Phone

Do you go through your mans phone or social media? Why or why not? Normally I'm completely against it because for so long I believed if you go looking you will find, but all the sudden I'm just sitting here thinking about it and I'm like... Well wtf will I find if my man isn't doing anything crazy?? Which he shouldn't be. So I checked my fb messages to see if there was anything I think he would be upset about if he saw and I saw nothing. If I'm accountable he should be too, right? So what do I do? Check his fb or leave it alone? I have no real concerns that he's doing anything fishy. Just curiosity.