What should I believe ?

So my husband and I have been going through some rough patches and I came back from seeing family, he did not come with me. I get back and I start doing house chores, I find a white shirt, it looks like it has makeup stains on it.. maybe pink lips ? And it smells as if he dumped a bunch of female perfume on it. He tells me that while I was gone and I told him to go out and have fun, he went to a friends house then after went to a club. He got drunk and danced with females, however that doesn’t make it okay. He says he didn’t sleep with any female, but I feel like there’s something else going on. In my eyes there no reason he should have been dancing with any female let alone close enough to get so make up on his shirt. What should I do ?