I Fucked My Wife's Best Friend

A few months prior to this, my wife and I had separated. Things were amicable, but it was her decision and not mine to split up so I was pretty devastated. We had a dead bedroom for most of our relationship together, things only being physical for a short while. It became a rarity to even share kisses after a point. Needless to say, when she invited her best friend to stay with us, I was starved for affection.
With her own marriage at an end, she was also in need of a pick me up, so to speak. One night while my wife was away, it happened. Her best friend and I had been having a couple drinks together and she started getting flirty with me. I had no defense for this as I can barely explain how nice it felt to finally be getting that sort of attention, to be told such things. Naturally, I was putty in her hands and we had to have more. So we did.
I proceeded to fuck her all over that house before she left, my separated wife none the wiser. I'd fuck her in her room, in our bed, in the shower, in the living room before I'd go to work, in the kitchen, on the stairs, I'd even get head from her on the back deck at night and she'd milk me dry in no time at all, always swallow it every drop. It was some of the best sex I had ever had and it felt so gratifying, invigorating to get back at her for leaving me over another, for leading me along sexlessly for so many years. The best part was how much better her best friend was in the sack than she ever was, I finally felt free