Was it good?

It is better you tell everything to that person before he comes to your country. Remember you cannot build a house with walls of sand false foundations. To make a good house you need proper foundations like truth and walls made of concrete like love, affection, devotion, truth, understanding. Without this no relation can stand like no house can stand. So tell him whats true and its not a big dealt that he might have also hided lots of things from you. Be a sport and if you are married alreayd dont spoil your marriage relation for someone whom you have never met. To be on the safer side you can tell your husband casually that you were chatting with someone to pass your free time and you didnt told that you are married and now he is proposing you for marriage. If you put it like this in front fo your husband I am sure he will take it positively and will help you in the issue and your marriage will also be saved.

Honesty is the best policy, but maybe you can annul your marriage first and then tell him in person. It may not make a big difference or it might. You'll just have to live with it. Maybe he has kept secrets from you too, maybe that is why he wants to meet you in person. All the best nevertheless!