My [23M] gf [23] made me a cuck without me knowing (cheating)

Recently, my girlfriend was playing a drinking game & took it a little far. She was incredibly drunk after hours of playing a shot game with myself & a friend.

Finally, after it reached 2pm, she decided to go to bed and asked me to join her. We were laid in bed talking about life & she brought up cuckolding (we’d had previous discussions about the topic) & was asking who was on the table and asking what I’m comfortable with. I told her previously that I wanted it to be with someone who didn’t know us, but this was said out of fear of being found out. I told her that as long as she’s having fun it can be with absolutely anyone she likes. She then brought up her ex boyfriend.

I immediately started getting hard just thinking about her with him, and she could tell. She started stroking my dick,slowly, and began telling me that she’d always found him attractive even throughout our relationship. This obviously turned me on and she could tell, she then asked out of the blue what I’d say if I found out she’d cheated on me in the past. I immediately said it wouldn’t bother me & that it would turn me on, I asked her ‘why?’ & she replied with ‘I don’t want to get in trouble’. I told her she wouldn’t be in trouble, and asked why again.

It was then that she decided to tell me she’d cheated on me a couple months prior with this ex boyfriend. She said she visited him after work one day with the intention of saying hi to his sibling, but upon arrival realised it was just him in the house. After he’d let her into the house he asked if she wanted to see something interesting upstairs, to which she obliged without hesitation. She followed him upstairs and into his bedroom, he made up some dumb reason for inviting her upstairs & began obviously flirting with her. She originally didn’t clock the flirting but eventually started playing his game. It was then that he jokingly pulled her hair when she walked past him, to which she replied ‘don’t do that’. He then, with a smirk on his face, said ‘why, does it turn you on?’ & she said ‘yeah, it will’.

After this exchange of words, she told me that he gently caressed her face and pulled it towards him, kissing her gently. She didn’t pull away & carried on kissing him, she then reached into his underwear and began stroking his cock. She did this all while making out with him, slowly stroking his cock & brought him to the edge. She then stopped, smiled and told him she had to go home or I’d get suspicious.

After telling me this, I was very clearly leaking pre-cum & she could tell I enjoyed the story. She told me to take off my underwear & said ‘you better make me cum for once, because I’m really turned on’. She then proceeded to get on top of me and ride my dick, I said ‘do you like that?’ & she replied with ‘I would if it was as big as his’. She then decided to grind on my dick & tease me about how small and pathetic it was. Telling me things like ‘it’s so small’ & ‘I wish it was bigger so I could feel it’. I felt so embarrassed but so aroused, she nearly made me cum after 30 seconds of this & I had to tell her to stop.

She asked me to get on top of her & fuck her as rough as I could, I did just that and tried my best to make her cum. She barely moaned throughout and she told me ‘I wish I could fuck some bigger dicks, you’re so small’. I immediately came & she rolled me off of her. She sighed & decided to finish herself off next to me. All the time she was describing what she’s going to do because I ‘can’t satisfy’ her.

(We’ve been together a long time & she consented for myself to put this out there to see your replies).