Secret(or not so) accounts

So I back when the whole Ashley Madison thing was coming out and everyone was getting caught I found OT my husband of 13 years has a email account that i didn't know about. And yes ladies I did check to see if his secret account was on there and I didn't find anything. Now I find out that he has a Twitter and Instagram account that I was not aware of. I am on neither social media site so I don't know if he post on these. And I don't know what to think, he has been unemployed since May. We have 2 kids 8 and 5 so anything he does they tell me. He has lied before, not in a cheating sense he lied for 3 years, and please don't ask what it was. What should I do?