i need sexual advice :/

I (22f) and my bf (24m) have been together for almost four years. I recently found a dildo and a butt plug on top of one of our shelves in the living room. I’m a little surprised but also not, considering this has been brought up a couple of times. He has asked me if i would be okay doing that kind of stuff and i’m not entirely sure. I’m not the dominant partner in the bedroom so this gives me a lot of anxiety and i have so many questions. He claims he isn’t attracted to men and is very attracted to me, this has been made clear, but i still have weird emotions about all of it. I’m not sure abt talking to him abt finding them just in case of embarrassment or shame, it’s also an invasion of privacy. It just gives me anxiety knowing that he’s doing this behind my back. Does he actually like men? Does he not trust me enough to bring this to my full attention? How long has this been going on? I think the sneaking around part makes me the most worried, considering he ordered these off of amazon and hid them from me. Can someone give me any advice on what to do??