Why is my fiance looking at ?

So, I went on my fiance's computer and have seen s in his history and asked him why he had it.. he said plainly it was a pop-up.I brushed it off because I didn't know what kind of pop-ups come up when you're looking online . That was a few years back, and now, I went back on his computer again.. and still, there's .. Does it mean he's gay? Does it mean he want's to be a female? I'm 25 and he's 26.