Guess I Got Cucked.

My gf and I have been together for 2 years. I’m 34 she is 26. She is a beautiful brunette. We have a very open and honest relationship( for the most part) so I was well aware of T (her co-worker). He’s been a work friend of hers since she started (before she met me). They work in close proximity to one another and often end up having lunch together at work. Well one Friday night she asked me if she could attend a wedding the next day as his plus 1 as his date had canceled last minute. It was to be a mid day wedding (noon) with a reception directly after at the same venue. Here is where our honesty and my being naive comes in. This isn’t word for word but close

Her: explains the above wedding and situation

Me: sure, sounds like fun

Her: I hope so

Me: so you’ll be home like 9-10ish

Her: silence

Me: hello

Her: silence

Me: hey what’s up

Her:(deep inhale and exhale and began speaking like she was in fast forward) Can I fuck T afterwards, if you say no I won’t, I know it’s a lot to ask, there’s just a lot of tension there, and it’ll be a one time thing. If you say no I won’t go and never ask again, I’m sorry

At this point I’m dumbfounded, hurt, angry and I don’t know what else. I’m already planning on just leaving and calling it quits.

Me: you’re grown and I don’t own you. Do whatever you like

Her: thank you babe, I love you I hoped you would understand

The next day came and as she was leaving she kissed me and thanked me and tried for a more firm confirmation from me.

Me: your grown and I don’t own you. If you’re home later tonight I’ll know you changed your mind if not see you tomorrow.

She left and I started packing clothes my sentimental items and my personal electronics ( laptop, Xbox, monitor, etc) planning on leaving if she didn’t come home I sat down and just sat in silence for hours blankly watching but not watching tv in this weird angry and sad and curious state 7 o’clock, 8 o’clock, 9, 10, 11, 12. At this point I’m aware she’s getting her brains fucked out( T is a tall, well built black guy. So I just assumed he’s well endowed)

She comes in the next morning at around 930 I’m basically in the same spot on the couch I had fallen asleep at some point. She walks up to great me and give me a kiss I refused and told her brush your teeth first.

Her: I already did, I wouldn’t suck somebodies dick and then kiss you.

She said it so nonchalantly.

Me: you need to tell me exactly what happened. Right now.

Her: why are you mad you said it was ok? you don’t want details but if you do I have some pictures and video on my phone

Her: I do really want to thank you for allowing me to do this. It means a lot. He’s got a new job and is moving a few hours away, so it was a good way to say goodbye (apparently they had tip toed around dating or hooking up before she met me but she shut it all down when we met)

She sat her phone and the coffee table and said I’m getting a shower watch or dont. I really hope you don’t but If you want me after I shower I’ll be waiting for you naked on the bed. Come and get it however you want it.

I stared at that phone trying to talk myself outta watching but I couldn’t

I watched my beautiful girl suck and fuck a pornsized bbc. She was in absolute ecstasy moaning and sweating and screaming. Several short clips of her in every position getting absolutely railed. And choking on this huge bbc.

I put the phone down walked in to the room and had sex with my girl

She claimed it was a one time thing. And she would ask me again if turned out not to be and I have every right to tell her no.

I have a feeling she’s lying