I [50 M] have never disclosed this before until recently

From the age of about 6 to 12 I lived alone with my mother. During that time I experienced her having sex with guys in our home regularly. She would sneak into the bathroom or another room and I would sit and listen. I recall her having sex with a guy while I was laid in bed with her. It wasn’t full on in front of me but from the movement and noise, it was obvious what they were doing.

I was probably about 9 or 10 when I took a friend home and she sat with her legs open and everything on display. My friend and I both stuck our dicks inside her but we really didn’t know what we were doing so I'm not sure you could say I lost my V to my mother right then. 

I used to go onto the old railway lines close to my house with a different friend. We had a place in the trees and bushes down the embankment a little where we would lay and put our dicks in each other. We lay there not really moving for a while and then swap.

I’m now 50 years old and have always had very outwardly look on anything related to sex. There’s not much I wouldn’t do or try and I think about sex most of the day where it can impede my work because I work from home. I’m probably hypersexual although I can’t be sure.