My GF does her father pt 1

About 4 years ago I started dating this girl named Marie she was 22 when I met her and very beautiful. 5'5" 125 long brown hair, fair complexion, and a nice big butt. 6 months into the relationship we took a trip so I could meet her father and other family members. Her dad was divorced and had been for many years.

Upon meeting him he seemed like an alright guy a bit protective of his daughter like most fathers are.  The way they hugged and kind of pecked on the lips creeped me out a bit when they greeted each other. I know that the daughter is supposed to romance the father in anon sexual way but the kissing was a bit too long for me to handle. It was nice to see she was close with her father. Before we were getting ready to go to bed he had made a comment about her "big butt". Which I again found a little unsettling yet blew it off as him joking with her.

Seeing how they didn't have a guest room I slept on the couch downstairs and Marie slept in the bedroom she grew up in, her fathers bedroom was across the hall from hers. She kissed me goodnight and I settled in on the couch falling asleep within an hour as her father had his tv on upstairs with his bedroom door open which I could hear.

A few hours after I had fallen asleep I woke up and upon waking up I could still hear the tv upstairs also I could hear my girlfriend laughing and every now and then I heard what sounded like moaning and her father grunting. I quietly got up and stood by the stairs to get a better listen. When I did I was for certain she was giving her father a blow job as I heard him say "suck it just like that" I knew it wasn't a porn movie because of my girlfriend moaning and giggling every now and then. I couldn't believe they were doing all of this with the door open. I wasn't sure what to think or feel about this at all yet my dick was hard and I felt like beating off.

Then I heard my girlfriend say "I want you in me daddy." which he responded with "let's go into my room". "let me check on Steve first make sure he's sleeping" she said before kissing him on the lips at least that's what it sounded like. I quickly made my way to the couch and covered up closing my eyes. I barley had one eye open as I saw her tip toe down stairs and look to make sure I was fast asleep she was only wearing a long shirt she would wear to bed as I saw he remove it before she walked back up the steps into her fathers room.

Again I got up quietly and stood by the stairs listening to them talk "god, you havea beautiful body" her father said as she thanked him for the complement. Then the door closed and it was hard to hear so I quietly creeped up the stairs until I was a few feet from her fathers door. Now I could hear them very well as she was sucking his dick again. Soon I culd hear the bed moving and skin slapping together and my girfriend moaning loudly as her father grunted. As my girlfriend said "I love you Daddy" he responded with "I love you too honey" as he continued to fuck her.

For the next hour or so I listened to them fuck, her father smack her ass, and Marie telling her dad she was about to cum and then her dad saying the same thing. I could not even believe what I was hearing. I heard her say "I'll sleep in here with you, just let me close my door" I slowly made way down the stairs and back on the couch. I could tell by the way they interacted with each other this wasn't the first time they did this.