messenger ni hubby and trust issues

is it wrong if i will open the messenger of my husband? ibig ba sabihin noon wala akong trust sa husband ko? he cheated once thru chat lang naman. pero ngayon nakikita ko naman na nagbabago na siya.. nakokonsensya ako kase di ko maibalik ang trust ko sa kanya. some people advised me to keep on praying pero nandito parin ang doubt na feeling. :( again my questions are is it wrong if i will open the messenger of my husband? ibig ba sabihin noon wala akong trust sa husband ko? paano po ba maibalik ang trust? :( TIA