I'm super new here and have no idea what I'm doing, so I'm only going to tell you what I know. I had an EA online and it ended because my H found it. I was happy it was over. From everything I've read, that's unique because normally it causes anger and resentment towards the suspicious spouse.
What i do know is that if he doesn't want you to know and especially if he is good with computers, you won't find any history or chats or pictures or anything. I know that you said you are going to stop looking and just want to hear it from him, good for you. Keep reminding yourself of that when you start thinking about it.
Could you be suspicious because you are insecure about your physical R w/ him? Just an idea... Maybe he is not talking to anyone (other than regular friends)Maybe he really thought you were a friend of a friend. Maybe he is bored at home and just wants to have fun. he didn't say let's meet up and have sex, so you don't have to assume the worst if you don't want. Give it the 48 hours everyone says, then approach him with a level head. (probably way harder than it sounds)
I have read over and over that an A whether PA or EA is a symptom of problems in the M, not the problem itself. If you can find the problem, maybe you can find a solution.
Good Luck and I hope tonight goes ok.
If i can't fall in love... I'd like to fall in chocolate! ~ Author Unknown