bring up the cheating?

I found out my husband downloaded a sex/meet up app as well as kik and Tinder. He has a history of lying and doing questionable things for a married man. These apps have been deleted for a while so I'm guessing this was about a year or a little over a year ago. We have been married almost 3. Do I bring it up? Or count this as karma and let it go since I have cheated in a previous relationship? Not somthing I am proud of but... the past is the past and I dont do that anymore.