Friends Sister Helpful Hands

When I was younger my buddy had a smoking hot sister Jessica who use to flirt a little bit nothing huge so i thought. One day while at there pool his sister came out in a very nice thong bikini shaking her ass and as a younger horney kid i naturally stared to find myself getting a boner and just could not stop staring. Well after a while it became too much so i said i was going inside to get a drink but really I went into the pool house bathroom to jerk one out. While doing so his sister Jess busted into the bathroom saying" i knew it" I'm standing there with my dick in my hand embarrassed to all hell. i Just kept apologizing over and over while putting it away. As i go to leave she shuts the door saying "you can't give your self blue balls like that" i tried to go around her but she then stood in front of the door. I can help she said, were you thinking of me while you were jerking off? i replied well yeah you look super sexy in you bikini. She then pulled my trunks down and i became super hard in an instant again. She turned around and started grinding her ass on my cock. quickly after the grinding she then turned and went down on her knees removing her top grabbing my cock and started jerking me. Needless to say i came pretty quickly but to have her drop down like that in front me and grabbing my dick and jerking it was incredible. took about 2 minutes but she jerked me off all over her nice tits. Her saying to me "nice load see you back out there" and life went on as normal right till present time. I still see her once and a while and my memory of that day is perfectly clear and for ever saved in the (spankbank)