We were walking on a trail in the woods to reach a waterfall.
Karina noticed that we were being followed by a guy, so we stopped and started kissing. I pushed her bikini away with my hands squeezing her ass and exposing her ass and pussy! The boy understood our intentions and put his dick out starting a masturbation while he watched us.
What I really wanted was to see his dick in her mouth, so I asked him to come closer and Karina, like a bitch, knelt down and started sucking the boy s dick and mine at the same time!
She stayed there suckling both cocks for a long time, and then we went to the waterfall so she could fuck for real with this lucky guy that chance put in our way!
I stayed away watching if anyone would arrive while Karina riding the boy s dick! Then she got into doggystyle and was penetrated with full force! I masturbated a lot watching all that! What an amazing girlfriend I have!
At some point they disappeared and when Karina came back she had sperm running