One of the girls that goes to my gym has the nickname Helen Hardbody (although her name is Karen). She is about 5'2', I would guess a 34 B bra. She is in awesome shape (she has done a marathon and does aerobics several times a week).
Even though she is so cute, no one ever talks to her. I finally got up the nerve to do so and found out she was also very sweet and thoughtful. We went out a couple of times and hit it off great. Although we decided we would never have a romance, we started working out together and running and biking in the summer.
One night, after going out we went back to her apartment. Now, I'm 6'4' tall and weigh 200 pounds. We started talking about sex and she admitted to being quite horny. I also was and she suggested that since we were not romantically linked perhaps we should just masturbate for each other. OK BY ME!!!!
She slipped off her t-shirt and jeans and I did the same thing. When her panties came off and I saw her naked (read fully shaved) pussy I almost came right there! We sat opposite each other and she fingered herself while I ran my hand up and down my penis. She asked if I wanted to meet 'Dave'. I wasn't sure, but said ok (albeit cautiously). She went into her bedroom and brought back her dildo. This was Dave. It was fabulous watching this nineteen year old girl pushing a dildo in and out of her. We both came a couple of minutes after that. She asked if I wanted to look at her close up (of course) and tossed me her panties to wipe myself up with. When I had cleaned up a bit, she told me I could take them home to launder them and I could return them 'whenever' I was finished.
We had many episodes after that. She obvioulsy liked and felt comfortable masturbating in front of me and I certainly enjoyed it as well!!