My husabnd is suspect that i am having affair

Hi I got married in in this year on date 06 may 2018, in my past there was one boy who used to visit our house because my father is in matchmaking business , which he did for his hobby , my mom and dad treated him like a son , one day he asked for my hand in marriage which dad refuse, Afterwards they didn’t allow him to enter in house , as they realize that he have bad intention towards me, letter we get the 4 message from him on my mom mobile, which we didn’t read because my mom doesn’t understand English and what written in English, we get the message really late it all happen I guess in 2013 after nearly there is nothing and here and there some message in my facebook, which I did block him as well, there is nothing serious and major about it, so we ignore it and its not a big thing that which we should explain in 2018 to my husband before marriage, as my marriage is arrange as we have no collection of events at the time As nothing going on the current time, letter after my marriage, he starts sending messages to my dad, I was unaware of it , my mom dad hide it thinking that I am happy with my husband, There was some problem in my marriage, and one day I got in argument with my husband and thereafter on his insistence left house, he asked me to left house which I did and then we call all him family members to discuss the fight and solve issue between couple, and the same day my husband and his relative come to my house and before leaving they inform my parents that they are receiving message from same boy who is now painting a picture that I had relation with him in past and was in affair with him but his relative inform me that my husband have not idea regarding this I got confused how to respond this matter to my husband as I am busy to solve this matter regarding this boy, collecting evidence and all now my husband got to know , as the boy send message to his other relatives as well, he said that this damage his reputation and he didn’t wish to remain in marriage with me, He didn’t even give me time for explanation, he says that I should told him about before marriage He is asking for divorce what can I do to save my marriage, he even stop all communication between us and not ready to accept me back to home