We had a good relation, and very hot sex always. This was the beginning of my cuckold fantasies because of my story with her.
At some point, i got suspicious she was cheating but she said no. I was almost sure and so one time when i was having sex with her, i told asked her again if she did cheat, and she said no, and i told her that if she didnt tell me and i would find out, i would break up, but if she told me she cheated on me i promissed her i would forgive her and love her. And she did confess.. And we kept having sex and she was very embaraced and confused, but i was turned on by it and asked her for details, saying i love her.
Then i asked her if she wanted more and she said "i'm curious with him..". I asked if it was because it had been very good and she said "yes.. he fills me so much inside, so big.." It started to really spice things up..
So she started having sex with him with my aproval, and coming back to meet me at my place after.
I remember the first time she got home and we had sex and i felt her all wet from cum inside.. my god, it was so good.. so slipery, so warm.. it was so hot..