"Get yourself a cheap keylogger and find out the truth in one day. You will record all his messages, websites, password." Best advice - you can get this online for a minimal price and believe me its worth it! I found out a lot of info about my ex fiance this way and I am so glad I did because I would have been married to a cheating liar if I would not have put this on my computer. Make sure its on your computer so it is legal for you to have it on there to monitor his activity. I hope you are wrong about your worries but if not I am sorry you have to be exposed to something like that, I know it is hard and not fun. Wishing you the best.