It turns out the guy she moved in with turned out to be a liar and cheat and she had broken up with him a month ago. I pulled up the pics I had of he... and so of course said sure I’d help.I showed up at the door and was greeted by Sen’s now 17 year old daughter. She was the spitting image of her Mom, dirty blond hair, nice sized tits, and great legs. She had on a short skirt and thin top, braless of course. “Hi, you must be Dan”, she said. “You’re tall”, she said. I was 6’1”, and she must. I twitch again; almost out of control and with strenuous effort manage to cut off a spurt of cum so that only an inch or so shoots out in a viscous line. I use the sensitive area just under the head of my cock to spread the sperm around the crotch of her panties. Just as I move the panties out of the way and replace my left hand with my right, I lose control and begin shooting cum into the cups of her jogging bra. I grunt uncontrollably and thrust my hips forward in spasms, each driving jab. There was a second of confusion on her face as he whispered "not like this", settling her concern. He took a black "sleep mask" from a draw and put it over her eyes. Leaving her sightless. He then guided her to sit on the bed and began slowly removing her clothes. Everything was done carefully, trying to avoid making too much contact with her body. She was only wearing stockings now, and she couldn't see how serious his face had become. He took her hands and bound them with a thin rope. Tight. Playing Doctors and Nurses with family members evokes those first moments when sexual feelings creep into you loins, by the time my brothers fingers touch me, my panties were soaked with what could only be describes as 'Lust Juice'.Realizing my vagina could respond in the same manner as my brothers cock did when I kissed it, was a revelation to both of us, we learned about sex ourselves by simply following our instincts and enjoying our bodies.I remember lying on my belly in bed with him on top.