found husbands used tissues...

My husband always jokes around and says he masterbates but then says he's just joking and doesn't. Today I realized a box of our condoms were on the floor in plan site so I went to put them under my husbands side of the bed. We have 3 kids and I didn't want them to see them. Well while I put the condoms under the bed I saw a bunch of used tissues and a sock, it wasn't just like 1 or 2 tissues more like 10 then I noticed a bunch hidden in an old slipper. Do I confront my husband with what I found? Do I just leave it be?  maybe he will feel violated that I went under his side of the bed