Myself (26) and my gf(26) went on holidays a few weeks back, we're outgoing adventerous people especially with sex. We fucked on the balcony, the beech at night and done things in a few clubs. One night in particular we were dancing, grinding on eachother when a girl came up and started grinding her ass into my gf, shes a lil bi curious anyway but even more so when tipsy so let it happen. She eventually turned around and they were face to face dancing staring into eachothers eyes, she leaned in and started making out with my gf and pulled me around to behind her and grinding her ass into my dick. My gf whispered something into her ear and next minute she lead us both by the hand back to our hotel where we had the best nights sex we've ever had along with this hot as fuck girl that we had just met. She didnt stay afterwards so we ended up fucking again and falling asleep. Didnt see her again after that but hella fun night.