Looking for lesbian stories where a 3rd woman seduces a woman in front of their GF

[midori93]

After reading forbidden fruit and eat and greet with a famous singer

I mean most cheating / infidelity stories happen "behind" the partner without their knowledge.
In these 2 stories the cheating / seducing happen humiliatingly in front of the partner with the partner's knowledge and this might be my new "story fetish"

That is why I am now looking for more stories where a woman dares to seduce and have sex with another woman in front of their girlfriend / partner.