I told my partner of 5 years I just found out I have herpes 2 please help I’m lost

i have been with my partner for 5 years and i tested positive for herpes i have never had symptoms and he tested negative. im so lost. i have hurt him so bad and although i bever cheated ever i feel so bad. we never used condoms. 5the thing i need help with is knowing how men react when finding this out from the woman they love. he doesnt want to leave me but he doesnt know how to deal with a possibility i could pass it to him one day. he has been up all night for a week straight he camt sleep bc he cant stop thinking about this. i never had symptoms and i was by the doctor that i might not ever show symptoms. how do i talk to him to give him peace? i dont want him to leave. i know this is hard to deal with and its hurting me so bad watching him in this depressed state of mind. please help me know what to say what to do. what not to say. im so scared he he cant get past this and still be with me. he is a very mental man. he deals witg everything logically and he is having a hard time with this one. we had blood test done 2 confirm our results