We get to a small waterfall. Mary shrieks, “A waterfall, with a pool,” she strips as she runs to it. With her last garment off she dives gracefu...ly into the water. I pick up her clothes that she has scattered about the trail. She swims, splashes and calls for me to join her. I’m grateful for some kind of silence and merrily wave at her. A few minutes later her nude form emerges from the water. I’m pleased with what I see. Mary has a great body, a perfect hip to waist ratio and perfect B cup. So I undress and climb in next to you. You don’t stir… but I do... Just the sight of you, the warmth of you and softness of your skin has gotten to me. The stirring in my cock is making me regret my decision not to wake you up… Because as my fingers gently caress your exposed skin, “up” is exactly what I am becoming.I lean forward and kiss, ever so gently, the nape of your neck. You skin is hot on my lips and my tongue darts out to taste you… I kiss you again, and my tongue moves across. Our up childhood was completely normal, despite an early habit of pretending to be the other. I’m not even sure our names our attached to the same body our parents intended. Not that it matters. I am me, she is she, we know the differences, and whether we are Tegan and Kirsten, or Kirsten and Tegan, it doesn’t matter. We are in our twenties now, both 5’4’’ 110 pounds, skinny with short dark hair and small elfin features. We aren’t completely identical of course, no one is I guess. Kirsten’s. We had time for a bite to eat before our flight was called.Fay reached across that tiny table after we had placed our order and took my hand."Whats next?" she asked.I asked her what she meant.Fay asked if I wanted to see her after we got home or was this weekend just another casual affair in my life.I told Fay that she was not casual in my mind. I asked her if I was just casual to her.Fay said "Suddenly you are the only important person in my life."I told her that I felt the same about her.At.