u/Public-Wrangler84

We have been dating for an almost 13 months me 38M(top) and him 33M(bottom). I recently went on a work trip and came back to his apartment and found a pair of his underwear with a cum stain and very visible butt crack line of a cum stain. He says he JO and cleaned himself up but how would it explain a clear butt crack line cum stain? I have a photo of the underwear in my profile