Real life cheating

(Until Chapter 10.1. is what already happened. Afterwards I count on you. Add your chapter describing what I should do or write in the comments. I will do it in real life and then update the story, until I inevitably destroy my relationship, or thanks to you, do the right thing and stop before its too late.)

My girlfriend is amazing. A 21 year old latina, smart, pretty, too good for me.

I‘m very happy with her, which makes it so much worse, that I cant get her friend „M“ out of my head. M is around 5‘5‘‘, has long straight brown hair with some blond in it, smooth, tanned, flawless skin, a very flat and fit tummy, perky, natural breasts, somewhere between B and C cup, that dont seem to be affected by gravity. Her face is flawless with soft lips that seem like from a painting. Her legs are long and smooth and her ass is rounder and juicer than it would make sense for her thin stature. She does work out a lot after all.

I‘ve met her in gym the other day, we had a friendly talk about my GF and then continued working out close to each other. She did squats, and I saw her ass stretching her thighs. I noticed her perfect ass before when she was hanging out with us, but not in tight gymwear. I knew that I shouldn’t look. But I really really wanted to. Maybe just a really short glance….