How do i know if hes telling the truth?
If you tell us what is making you suspect him of cheating we may be able to help more. ALWAYS TRUST YOUR OWN JUDGMENT – If you have good reason to believe this then your instincts are likely right on. In general the way to see if someone is being honest is to be very aware of their body language when they are talking to you. The best way i know of making this judgment is to watch their body language when you know they are lying or being misleading to someone else and then you can use that information to judge their honesty with you.