I cheated on my wife
I 27F cheated on my wife 26f. Kind of anyway. basically the back story is me and my wife were open for awhile and during that time i almost slept with a good friend whom i had, had feelings for previously. she was uncomfortable with this and made the decision to close the relationship. for months me and him just stayed friends and chatted occasionally but the other night, he messaged me saying how disappointed he was that we never got to sleep together. instead of immediately telling my wife he said this and blocking him i entertained it. told him how badly i wish i could sleep with him. we almost sent pictures to each other but we stopped short of doing so. i dont know what to do now. i feel ashamed of myself and don't know how to move forward. i plan to block him but am unsure if i should tell my wife as i think it will traumatize her and nothing physical happened. for more context she cheated in the past. what should i do and how do i move forward?