Hey guys, after months of discussions and searching, my girlfriend (f28) and I (m26) have finally found a unicorn. My girlfriend is bi and and a threesome with another girl is her biggest fantasy so this was all her idea to begin with. She's had ffm threesomes in the past but this will be my first and I'm absolutely thrilled. We've already discussed our boundaries and comfort levels and we agreed that I won't fully penetrate the other girl vaginally. We're going to have our first meet up later this week. I'm here asking for some advice on navigating this and making it the best experience possible for all of us. I'm letting my girlfriend take the lead on it for the most part since it's her fantasy but any tips on how to make sure everyone feels included and fulfilled would be greatly appreciated. Also any fun activities to get us all more physical or cool positions and sexual activities that work well in a ffm threesome. Thanks!