Blackmailing mom

I am Aditya.I was studying in college.at that time I was 18 and I had habbit of masturbation. One day at sharp 11:30 pm I wake up to drink water and I saw that something sound was coming from my parents room.so I decided to go and check.the door was unlocked and I saw that my mother was giving blowjob to my father.my heartbeat get fast because I haven't seen anything like that before.I saw my mothers boobs and her ass. She had a huge boob and sexy ass.so I decided to watch until end and I started to masturbate.then my mother go down and dad comes up.after few minutes they done with that but I was not satisfied.then my dad go to sleep I thought that they will do it again but they didn't. I thought that my dad can't fulfill my dad's satisfaction but I can't do anything.her boobs were printed on my mind.
then I go to my room but i couldn't sleep.my mind always hiring that scene.so I decided to masturbate so that I can move on from that.after few minutes I hear the voice. Then I saw that my dad was sleeping and my mother comes down to drink water.I was seeing her from another look at view.my mind was saying that go and fuck her go and fuck her but there was 0 chance for that but I decided to go down and talk to her. I go down she saw me I saw her. I want to kiss her but I can't.so then I go to my room and masturbate and the I go to sleep.next day dad was going to Australia and I thought that this is the chance if I want to do fun.when my dad gone after few hours I saw a gay who comes our home I didn't knew him but my mother was saying he was her school friend.then I go to my room and started to play video games.then my mind automatically hits that why he comes now means after my dad goes to Australia.so I have to go and check what is happening.so I go and what I see was unexpected.my mother was also doing sex with her and I was thinking like my mother is bitch she can do sex with anyone.then comes in my mind was "then she can also do sex with me if I blackmail". then I started to record them.when they finish after that that man go to home and I decided to blackmail her.then she was putting the clothes in washing machine.so I go back and pushing her like doing sex. She was surprised and then she saw me and said "are you an idiot what are you doing " then I gave them that video and I said "if I send to dad then they will give divorce to you.If you don't want divorce then you have to sex all the time whenever I say until dad comes back.she was confusing and she said "yes". After that we go to her room and she gave me blowjob after that we had sex and we open many secrets about everything. Still when dad goes out we do the sex and she enjoy that