Hidden agreement with my friend's desirable mother Mandy Rhea

I've always had a thing for my friend's mom, Mandy Rhea. She's a smoking hot MILF with a body that hasn't aged a bit. We've never talked about it, but I know he knows. One day, we were hanging out and he casually mentioned that we have an unspoken agreement. I nearly choked on my beer! We'd never discussed it, but he knew I was into his mom and he was cool with it. He left the room for a bit and when he came back, he had Mandy waiting for me in the guest room. I almost shit my pants! We started talking and before I knew it, we were making out. She was so assertive, taking control and showing me things I'd never done before. It was incredible and I knew right then that this was exactly what I needed in my life.