Boyfriend accidentally told me he went to a strip club

I mean I don’t care about going to the strip clubs but he told me he’s been to one while we were dating. I’ve asked him if he wanted to go with me befor but he acted like he didn’t want to go. Now he told me he’s been to one in our town. And I feel kinda mad as to why he would’ve kept it an secret. He’s cheated in the past, so I think that’s what’s wrong . Am I wrong for feeling mad at him?