Sexual Tension With Busty Friend

This morning, I attended a seminar with a female friend.  She is about the same age that I am.  There is some sexual tension between us and she is usually the one who drops little hints and innuendos.  There is some relatively innocent flirting at times.  I get the impression that her guy has lost interest; this is quite different from a lot of stories and comments here where it is the other way around. We both met up at the place where we attended the seminar.  I knew that she was running late and I was picking up coffee anyway, so I brought some for her also.  She was thrilled that I did and I lost track of how many times she thanked me, although I thought nothing of it.   We had a little while before it started and we were making small talk.  She mentioned that she was thinking of getting her hair cut because it was so hot in the summer.  She has beautiful, thick hair.  She pulled it back in a ponytail away from her face to show what she was thinking of in terms of a new style.  With her hair pulled back, she looked different (in a good way) than how she usually looks.  I complimented her on it and told her that her hair always looks great.  I said, "Do that again?  The ponytail look." She smiled and did it again.  Gorgeous.  Then, she said, "Yeah, it is just so hot in summer.  Feel it.  Feel how thick it is."  I was loving this.  I did as she suggested and felt it.  It was great; strong, silky, thick hair.  I again told her how great her hair is and she smiled again.   A while ago, she mentioned that she wanted to lose weight and she thought that she was heavy.  I told her that I didn't think so.  The best description of her body is that she is about 5'2" tall and she is thick, but not fat.  She has nice legs, a nice ass and her boobs are natural and huge.  They are the size of two very large cantaloupes.  Of course, I have only seen her in clothing; I imagine that there is some hang to them once the bra comes off, but I really don't get hung up on details like that.  I can tell that she probably looks really good naked. We had a break in the day and talked some more.  We are both taken; however, if that ever were to change, I would be very interested in her.  She has this look about her that suggests that she is good in bed.  She is so friendly and nice and it is such a shame if she is indeed neglected in the bedroom, because she drops little hints here and there about sex and sexual things.   At the end of the seminar, as we were walking out, she had forgotten to sign in.  I waited at the sign in table that was about chest high.  She was next to me and as I pointed to something on the table, my left forearm grazed her right boob.  I didn't flinch or move and she didn't seem to care at all.  It was innocent yet hot at the same time.  We both had to run.  She told me that it was great to see me and she gave me a big hug.  Once again, I felt her massive chest and her warm body against me and it was a great feeling.   I came home and returned some calls.  I thought about my day and I imagined her naked and riding me with those big melons bouncing all over the place.  I found myself trying to visualize her body.  What did her nipples look like?  Is she shaved?  I imagined banging her from behind with those titties swaying and then flipping her over and finishing on top of her.  I had to run some errands later in the day; however, before I headed back out, I plopped on the bed, stripped naked and masturbated myself to a really nice orgasm while I was thinking about what took place earlier.