This man was very clever at keeping a lie for so long and living another life, it’s understandable you would be livid and shocked with many other emotions involved. The best way to overcome this is to make sure you tell yourself this was not your fault, this was beyond your control and there was nothing you could do. It’s an experience you will deal with but will learn from even though you didn’t see it coming. As the saying goes ‘what goes around, comes around’ as long as you do your best and always be honest you can’t do any better than that. You will get over it as time is a good healer but when you want to start dating or go into a new relationship take it with caution until you are 100%. The reason you found out was because your instinct told you something wasn’t right which led you to suspicion. Continue to trust your instincts then you can’t go wrong.