My boyfriend was on this website emo chat city, now im worried?

Hey my boyfriend is very kind, faithful and loving - i know he wouldnt cheat but a good while ago like last year (we were stil going out then) he was on his emails in the library and this thing emo chat city popped up in his emails on hotmail. I know my boyfriend was an aspiring emo back in the day, so i knew it couldnt just be a stupid message it was obv something he'd added. Anyways iv looked it up and realised its a chat website with lots of pretty girls in it. Theres a webcam option and i even made my own account and got a few people adding me in seconds. Now im worried, what if hes still on it? who could he be talking to? I want to confront him, but i tend to get paranoid quite a lot, as i have a bit of paranoid personality disorder and i get very anxious easily. But what should i do? i know answers are going to be like do you have any reason not to trust him? answer is hes never put a foot wrong, hes sweet and hes the one been cheated on in the past.