Girlfriend turned into my step-mom...

I met my(M25) girlfriend Amelia(F21) back in 2018, around 2019/2020, we were hit really hard by lockdown during the pandemic.

At the time we were living with my single, divorced dad(50). He is a bit of an alcoholic but he's never been too much of a douchebag, up until this incident, we were fairly close.

I got layed off during the pandemic as my company ended up closing shop, and I ended up working at a grocery store for awhile.

My relationship with Amelia was decently rocky from the start, but for the past years we hadn't really had any arguments...

Until about a month into my new job, I noticed she had started getting distant with me, and we even completely stopped having sex, despite it being a semi-regular occurrence.

I didn't think too much about it and kept slaving away at this temp job until I could find something more within my skillset long-term.

Amelia has left her job about 6 months into moving in as she wasn't thrilled with the schedule, and upon my father's agreement we paid a portion of rent and were free to stay, much cheaper than apartments in the same area.

Eventually I had noticed she had become increasingly shy toward me, avoiding questions, which at the time I shrugged off. What I could not shrug off was how cozy she was getting with my father.

They were always watching tv together something she was a fan of, though she usually preferred to watch on her own, but they would stay up late watching whatever was on cable at the time.

It was suspicious to me. But I was working such long hours, I never put two and two together, until a day I walked in on them.

I was sick (non-covid related, thankfully) and stayed home. I suppose they had forgotten about it as I walked in on them kissing with my fathers hand down Amelia's pants.

I was shocked and kind of stared, before slinking away without saying anything. My heart was broken and I didn't know what to do... what i did know was that I was incredibly turned on by it.. I felt guilty but I did what any other young guy would and jerked off to the idea of my own father fingering my gf...

After I came, I cleaned up and headed outside for a bottle of water, everything seemed normal then.

Fast forward a few hours and I wake up, thirsty again from my fever. I step outside and hear this mushing sound, like someone stirring pasta. I err around the corner to see my dad raw dogging the shit out of my girlfriend.

It's like he's fucking a grudge out of her as he looms over her naked body. I just watch as he slams himself into her before dumping a fat load inside her.

He leans in and starts kissing her before starting over again, I just stand there and record it on my phone. In my head as proof, but i just ended up masturbating to it after he shot another load inside of her.

About two days later she told me she wasn't interested in pursuing a relationship with me, and flat out said she wanted to be with my father, which I meekly agreed with.

They got married in 2022, and she is currently very pregnant with their 2nd while i help raise their first..

Thanks, dad.