<human>: Give me the gist of the text in a nutshell

It all started earlier this year. I was hanging out at a friends house a lot. I would get into long conversations with my friends neighbor (I get along well with older adults). 

My friends neighbor would get drunk and hit on all of us. The day it happened I was drunk too so I played along. She invited me over and we drank some more. We began to have sex on her couch. At one point I asked "when is your husband coming home?" She replied "I don't care, right now I'm doing this." After she said that I got worried so I wrapped up and left. 5 mind after I left he showed up.

 After that we agreed to not talk about it and stopped talking. Recently we saw bumped into each other  and started talking again. At one point her husband read our messages and found out. He pretended to be her and invited me over. With my luck I couldn't find my keys so I couldn't make it. Literally dodged a bullet. He owns a gun. Anyway.

 A mutual friend contacted me to today saying everyone is talking about the drama over the husband finding out about me. Our mutual friend said he wants closure so he wants to talk to me and ask the truth. I don't know what to say and I'm honestly feeling horrible about everything.
<bot>: slept with someone's wife. Husband finds out. He wants closure and wants to speak with me. I have no idea what to say. I feel extremely guilty and horrible about everything. Can I get your input or advice?